Changed default logfile path to relative path

[krestenlaust]

I had to remove the tmp folder as well, since the config doesn't create the path, so the error would still occur when a hadn't been created.

Resolves #365

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 53.45%. Comparing base (6f1ecdc) to head (da8022a).

Additional details and impacted files

@@           Coverage Diff           @@
##             next     #386   +/-   ##
=======================================
  Coverage   53.45%   53.45%           
=======================================
  Files          33       33           
  Lines        4548     4548           
  Branches      267      267           
=======================================
  Hits         2431     2431           
  Misses       2067     2067           
  Partials       50       50           

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