Hi there, welcome to the forums.
The following page from the Help Center may be useful to you:
well. the weird thing is that I am able to connect to any other modules of the course. Just not the string section.
Your browser’s dev tools (F12) will likely indicate the resource(s) that the Learning Environment (“LE”) is failing to load.
You’d be looking for any requests to domains listed on the page I linked previously which are returning an error response, for example
I still can’t fix it. I am not able to access that specific lesson at all!
Try seeing if anything in the following topic helps.