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I ran an upgrade of my Ubuntu machine from 12.04 to 14.04 and afterwards, I noticed that my Trac stopped working, giving me this error message on the webpage:

"AttributeError: Cannot find an implementation of the "IRequestHandler" interface named "WikiModule".  Please update the option trac.default_handler in trac.ini."

I googled around a lot to see if others experienced this problem, but found no solution. Did anyone encounter and solve this?

pkout
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  • Try removing `default_handler = TagsWikiModule` from your trac.ini file. – Nathan C Aug 26 '14 at 16:17
  • I don't have that in the file. – pkout Aug 26 '14 at 16:20
  • I fixed it by reinstalling the entire server from scratch. I think what broke wasn't Trac, but my Apache2 configuration files during the update. I couldn't tell what got broken. – pkout Aug 27 '14 at 21:15

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