Hello @Mika S , Thanks for using Microsoft Q&A Platform.
Generally, using the correct key (copied from the language resource in the Azure portal) while creating the bot resolves this issue. Also try to restart the app service.
I would suggest you check this similar thread to see if that helps: https://learn.microsoft.com/en-us/answers/questions/1193326/the-bot-encountered-an-error-or-bug-to-continue-to
I hope this helps.
Regards,
Vasavi