HTTP ERROR 500 Felix Web Console

I’m having problems with Felix Web Console. I reset my local branch to the last working commit, and I think I lost some config files…I redid the workspace in Eclipse, and all bundles were imported properly. When I’m trying to run the Edge application, I cannot access one page in Felix Web Console - the configuration one.
I’m getting the following error:

The entire log is available here:

What can be the reason? Is there a way to reset the local config of Apache Web Console? If so, then how and where?

All the best,