java.lang.IllegalArgumentException: The main resource set specified […] is not valid

Question

I\'m having trouble starting my Tomcat server, it used to work, but I did something wrong and now it throws me this exception:

Caused by: java.lang.IllegalAr         


        

Answer 1

A maven update did the trick for me.

Right click on your maven project:

• Maven > Update Project...
• Select All
• Check "Force Update of Snapshots/Releases"
• Click Ok

Now, right click on your server:

• Clean...