Check this below to link this help in my case too.
Click here It seems that this is a bug in the Eclipse PDT and according to this report: Error 271071 - "Incompatible version of the debugger", when it is not debugged, the error seems to be fixed when you close ALL projects in the workspace and then open it again depending on what you need.
Personally, I solved this by changing the debug ports in "Preferences β PHP β Debugging β Installed Debuggers", with these values:
Zend Debugger (30000)
XDebug (19000)
What works for me, maybe you need to try other ports.
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