I have installed plugin Scala IDE 4.7.x in my Eclipse Version 4.10.0 (2018-12). When I try to auto-complete Scala Code(using CTRL+SPACE), it gives me the following the error message.
I tried disabling Java related proposals from content assist assist from Window->Preferences->Java->Editor->ContentAssist->Advacned. That did not work. Please have a look at the screenshot below:
ran into the same problem with Eclipse 2019-03 and this is a bug in Eclipse, it is fixed in Eclipse 2019-06.
you can already update to the RC1 with using the P2 URL : https://wiki.eclipse.org/SimRel/2019-06/Simultaneous_Release_Plan#p2_Repository
Final Release will arrive in a week.
see : https://stackoverflow.com/a/55698535/4473413