You shouldn't post a screenshot if it's not yours for something like this. Just saying, it's misleading and doesn't really help.
So I'm not 100% sure what's going on, but scanning through the debug.log this caught my eye:
So, Bountiful is generating an error, and if you notice the subsequent errors about token recognition errors, the tokens it is complaining about spell out "SpawnerNBT". Unfortunately I can't tell where it's coming from/what is causing it. Thing still seem to keep going after this though. Then:
So, I would remove the Bountiful mod, as it appears it is using Kotlin, which I am not familiar with at all. I believe it's another language that runs in the Java JVM maybe? But it looks like you not having a Kotlin language provider for the JVM is what is making it crash.
*edit: Sorry, just realized you noticed the Kotlin thing, I was distracted by your completely unrelated screenshot. A quick google search: https://kotlinlang.org/docs/reference/faq.html