Running site fails with python 2.x
When running our new website with 'lektor server' python 2.x stacktraces, and fails to load 'about' pages. Hopefully I'll be able to provide a branch to pull from for future patches (#29493 (moved)), but until then providing attaching a patch file you should be able to apply with 'git am 0001-Stacktrace-when-launching-lektor-server.patch'.