Errors
Element “meta” is missing one or more of the following attributes: “http-equiv”, “itemprop”, “name”, “property”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Start tag “body” seen but an element of the same type was already open.
Bad value “/courses/filter?categories[]=luyen-thi” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=luyen-thi&sub_categories[]=luyen-thi-chung-chi” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=luyen-thi&sub_categories[]=thi-dai-hoc” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=multimedia” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=multimedia&sub_categories[]=kien-thuc-nhiep-anh-co-ban” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=multimedia&sub_categories[]=nhiep-anh-ky-thuat-so” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=multimedia&sub_categories[]=cong-cu-chinh-sua-anh” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=multimedia&sub_categories[]=nhiep-anh-thuong-mai” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=multimedia&sub_categories[]=bien-tap-video” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=phat-trien-ca-nhan” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=phat-trien-ca-nhan&sub_categories[]=thay-doi-ban-than” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=phat-trien-ca-nhan&sub_categories[]=phat-trien-su-nghiep” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=phat-trien-ca-nhan&sub_categories[]=sang-tao” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=phat-trien-ca-nhan&sub_categories[]=song-hanh-phuc” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=phat-trien-ca-nhan&sub_categories[]=ren-luyen-tri-nho” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=phat-trien-ca-nhan&sub_categories[]=kha-nang-lanh-dao” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=phat-trien-ca-nhan&sub_categories[]=tao-dong-luc” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=phat-trien-ca-nhan&sub_categories[]=kiem-soat-cang-thang” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=phat-trien-ca-nhan&sub_categories[]=ren-luyen-tu-tin” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=phat-trien-ca-nhan&sub_categories[]=tang-hieu-qua-cong-viec” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=phat-trien-ca-nhan&sub_categories[]=tai-chinh-ca-nhan” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=phat-trien-ca-nhan&sub_categories[]=xay-dung-thuong-hieu-ca-nhan” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=phat-trien-ca-nhan&sub_categories[]=ky-nang-tao-anh-huong” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=tin-hoc-van-phong” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=tin-hoc-van-phong&sub_categories[]=soan-thao-van-ban” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=tin-hoc-van-phong&sub_categories[]=phan-mem-ke-toan” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=tin-hoc-van-phong&sub_categories[]=phan-mem-trinh-chieu” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=tin-hoc-van-phong&sub_categories[]=pham-mem-quan-ly-du-lieu” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=tin-hoc-van-phong&sub_categories[]=he-dieu-hanh” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=tin-hoc-van-phong&sub_categories[]=e-learning” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=am-nhac” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=am-nhac&sub_categories[]=nhac-cu” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=am-nhac&sub_categories[]=san-xuat-am-nhac” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=am-nhac&sub_categories[]=luyen-thanh” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=am-nhac&sub_categories[]=ky-thuat-am-nhac” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=am-nhac&sub_categories[]=phan-mem-am-nhac” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=marketing” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=marketing&sub_categories[]=digital--marketing” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=marketing&sub_categories[]=seo” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=marketing&sub_categories[]=social-marketing” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=marketing&sub_categories[]=branding” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=marketing&sub_categories[]=kien-thuc-co-ban-marketing” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=marketing&sub_categories[]=phan-tich-va-tu-dong-hoa” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=marketing&sub_categories[]=quan-he-cong-chung” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=marketing&sub_categories[]=quang-cao” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=marketing&sub_categories[]=video-va-mobile-marketing” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=marketing&sub_categories[]=content-marketing” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=marketing&sub_categories[]=marketing-truyen-thong” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=marketing&sub_categories[]=tiep-thi-lien-ket” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=marketing&sub_categories[]=viral-marketing” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=life-style” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=life-style&sub_categories[]=do-handmade” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=life-style&sub_categories[]=lam-dep” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=life-style&sub_categories[]=am-thuc” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=life-style&sub_categories[]=giai-tri” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=life-style&sub_categories[]=khong-gian-song” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=life-style&sub_categories[]=thu-cung” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=life-style&sub_categories[]=du-lich” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=ngoai-ngu” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=ngoai-ngu&sub_categories[]=tieng-anh” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=ngoai-ngu&sub_categories[]=tieng-han” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=ngoai-ngu&sub_categories[]=tieng-duc” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=ngoai-ngu&sub_categories[]=tieng-phap” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=ngoai-ngu&sub_categories[]=tieng-nhat” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=ngoai-ngu&sub_categories[]=tieng-trung” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=ngoai-ngu&sub_categories[]=tieng-viet” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=cong-nghe-thong-tin” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=cong-nghe-thong-tin&sub_categories[]=chung-chi-it” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=cong-nghe-thong-tin&sub_categories[]=an-ninh-mang” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=cong-nghe-thong-tin&sub_categories[]=thiet-bi-dien-tu” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=cong-nghe-thong-tin&sub_categories[]=van-hanh-he-thong” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=cong-nghe-thong-tin&sub_categories[]=co-so-du-lieu” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=cong-nghe-thong-tin&sub_categories[]=cong-cu-lap-trinh” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=cong-nghe-thong-tin&sub_categories[]=thuong-mai-dien-tu” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=cong-nghe-thong-tin&sub_categories[]=ung-dung-di-dong” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=cong-nghe-thong-tin&sub_categories[]=ngon-ngu-lap-trinh” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=cong-nghe-thong-tin&sub_categories[]=software-engineering” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=cong-nghe-thong-tin&sub_categories[]=phat-trien-web” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=the-thao-va-suc-khoe” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “//static.edumall.vn/assets/category_home_page_v4/suc_khoe_the thao-efa12a8f8ceb7e46e9c4c23c249ee824aa60e0a3389087b5ecc9a49bd52f6ccd.svg” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/courses/filter?categories[]=the-thao-va-suc-khoe&sub_categories[]=fitness” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=the-thao-va-suc-khoe&sub_categories[]=dance” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=the-thao-va-suc-khoe&sub_categories[]=an-kieng” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=the-thao-va-suc-khoe&sub_categories[]=suc-khoe” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=the-thao-va-suc-khoe&sub_categories[]=thien” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=the-thao-va-suc-khoe&sub_categories[]=dinh-duong” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=the-thao-va-suc-khoe&sub_categories[]=ky-nang-tu-ve” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=the-thao-va-suc-khoe&sub_categories[]=the-thao” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=the-thao-va-suc-khoe&sub_categories[]=yoga” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=the-thao-va-suc-khoe&sub_categories[]=suc-khoe-tinh-than” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=thiet-ke” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=thiet-ke&sub_categories[]=3d-va-animation” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=thiet-ke&sub_categories[]=kien-truc” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=thiet-ke&sub_categories[]=thiet-ke-web” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=thiet-ke&sub_categories[]=tu-duy-thiet-ke” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=thiet-ke&sub_categories[]=phan-mem-thiet-ke” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=thiet-ke&sub_categories[]=thiet-ke-thoi-trang” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=thiet-ke&sub_categories[]=thiet-ke-do-hoa” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=thiet-ke&sub_categories[]=thiet-ke-game” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=thiet-ke&sub_categories[]=thiet-ke-noi-that” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=thiet-ke&sub_categories[]=ui-ux” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=kinh-doanh-khoi-nghiep” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=kinh-doanh-khoi-nghiep&sub_categories[]=dau-tu” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=kinh-doanh-khoi-nghiep&sub_categories[]=bat-dong-san” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=kinh-doanh-khoi-nghiep&sub_categories[]=nhan-luc” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=kinh-doanh-khoi-nghiep&sub_categories[]=kinh-doanh-tai-nha” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=kinh-doanh-khoi-nghiep&sub_categories[]=phan-tich-kinh-doanh” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=kinh-doanh-khoi-nghiep&sub_categories[]=luat-kinh-doanh” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=kinh-doanh-khoi-nghiep&sub_categories[]=quan-ly-du-an” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=kinh-doanh-khoi-nghiep&sub_categories[]=van-hanh-doanh-nghiep” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=kinh-doanh-khoi-nghiep&sub_categories[]=chien-luoc-kinh-doanh” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=hoc-thuat” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=hoc-thuat&sub_categories[]=ke-toan” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=hoc-thuat&sub_categories[]=luat-hoc” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=hoc-thuat&sub_categories[]=khoa-hoc-xa-hoi” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=nuoi-day-con” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=nuoi-day-con&sub_categories[]=giao-duc-gioi-tinh” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=nuoi-day-con&sub_categories[]=dinh-duong-cho-con” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=nuoi-day-con&sub_categories[]=phuong-phap-day-con” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=phong-thuy-nhan-tuong-hoc” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=phong-thuy-nhan-tuong-hoc&sub_categories[]=phong-thuy” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
Bad value “/courses/filter?categories[]=phong-thuy-nhan-tuong-hoc&sub_categories[]=nhan-tuong-hoc” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.
The element “button” must not appear as a descendant of the “a” element.
Element “div” not allowed as child of element “button” in this context. (Suppressing further errors from this subtree.)
Attribute “type” not allowed on element “div” at this point.
Element “div” is missing one or more of the following attributes: “role”.
Bad value “true” for attribute “required” on element “input”.
Duplicate ID “email”.
Duplicate ID “password”.
Duplicate ID “authenticity_token”.
Duplicate ID “register-modal”.
Duplicate ID “name”.
Duplicate ID “fogot-password-dialog”.
Duplicate ID “email-reset”.
Duplicate ID “login-modal”.
Duplicate ID “forgot-password-button”.
Attribute “value” not allowed on element “a” at this point.
Attribute “author_image” not allowed on element “div” at this point.
Attribute “author_name” not allowed on element “div” at this point.
Attribute “course_alias_name” not allowed on element “div” at this point.
Attribute “course_description” not allowed on element “div” at this point.
Attribute “course_duration” not allowed on element “div” at this point.
Attribute “course_label” not allowed on element “div” at this point.
Attribute “course_level” not allowed on element “div” at this point.
Attribute “course_name” not allowed on element “div” at this point.
Attribute “on_cart” not allowed on element “div” at this point.
Duplicate ID “561251c4d8b731315500003b”.
Duplicate ID “58cb58b5ce4b142dbb258ebb”.
Duplicate ID “58291ad6ce4b1464bf62bb8c”.
Stray start tag “script”.
The “aria-labelledby” attribute must point to an element in the same document.
Warnings
Empty heading.
The first occurrence of ID “email” was here.
The first occurrence of ID “password” was here.
The first occurrence of ID “authenticity_token” was here.
The first occurrence of ID “register-modal” was here.
The first occurrence of ID “name” was here.
The first occurrence of ID “fogot-password-dialog” was here.
The first occurrence of ID “email-reset” was here.
The first occurrence of ID “login-modal” was here.
The first occurrence of ID “forgot-password-button” was here.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The value of attribute “course_description” on element “div” from namespace “http://www.w3.org/1999/xhtml” is not in Unicode Normalization Form C.
The first occurrence of ID “561251c4d8b731315500003b” was here.
The first occurrence of ID “58cb58b5ce4b142dbb258ebb” was here.
The first occurrence of ID “58291ad6ce4b1464bf62bb8c” was here.