Hi I am wondering if anyone found some similar issues upgrading from ubuntu machine. I upgraded from eclipse mars to eclipse photon and when I try to run my Tomcat 8 server I get the following error.
Plug-in "org.eclipse.jst.server.tomcat.core" was unable to instantiate class "org.eclipse.jst.server.tomcat.core.internal.TomcatLaunchConfigurationDelegate". org.eclipse.jst.server.tomcat.core.internal.TomcatLaunchConfigurationDelegate.allowAdvancedSourcel
I have tried updating all repo's to no success, I read some threads about WTP ServerTools so I tried upgrading to version 3.10 and this will not update for me either, any ideas would be grateful.
Or should I just do a reinstall to the version I had working, would properly save time in the long run
I'm having the same issue. I upgraded from within eclipse (Oxygen) by entering the new repository location.
Java 8 / Ubuntu 18.04
I then couldn't start tomcat with the above noted error.
I just ran apt update & apt dist-upgrade but it didn't pull down any relevant packages.
I then ran the 'Help | Check for Updates' option in eclipse and it installed some wtp tool updates. I then deleted the Server instance in eclipse and re-created it.
Tomcat now starts correctly.
Summary: Run 'Help | Check for Updates' in eclipse and it looks like that will fix your problem.