Am I bearing jariyah sin from doing that I don’t know it have evil

Is it a sin for doing something we didn’t know was a sin? Here’s the situation of the example : My teacher said she wants us doing a task and study from a certain website. When she said she gave us the link, it turned out to be the wrong link. I then proceeded to ask for the correct link and ask to post it on groupclass in which she agreed and did so. When I clicked the link, I realized the link contained many haram elements such as philosophy, music, girls not covering their awrah nor wearing hijab, etc. Note: - The website is like Google Classroom - I study in a mix school - I study in a school that various in religious diversity - My parents don’t allow me to switch schools