not really a problem in ktor, but the ktor source causes a lot of exceptions in idea. just git checkout main, open the project in idea, and the exception reporter starts reporting errors. Its also not possible to navigate by control clicking.

Could you tell me if there are exceptions from ktor plugin?

it does not seem related to ktor at all, just idea bugs that are triggered by the ktor sourcecode

maybe related to my local setup but it happens on my macbook and my desktop mac