Looks like there is some plugin that loads its bootstrap.js file and a conflict arises. Did you please follow suggestions from this article?
sorry already done, but i can't find the plugin who's give the errorsorry already done, but i can't find the plugin who's give the error
It can be helpful, also to clear cache after disabling/enabling a plugin and check if the error is still present.
done error message still appearsdone error message still appears
Actually you can ignore that message if there are no issues visible on the site. If you close it in the application, it should not appear again.