ITMS-90809: Deprecated API Usage - New apps that use UIWebView are no longer accepted.

Same. I’m using 2018.3.14f1 for my project. Do I just need to update to a new Unity version or are there some packages/dependencies I can remove?

Edit:
Actually found an answer in this thread.

ITMS-90809: Deprecated API Usage - Apple will stop accepting submissions of apps that use UIWebView page-3

This fixed the problem!