Add path sanitization missing step in some DataSources methods.

[PProfizi]

This missing step resulted in unexplained crashes due to paths using \ instead of /.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.52%. Comparing base (b673c4f) to head (76d461a).
Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2054      +/-   ##
==========================================
- Coverage   88.55%   88.52%   -0.04%     
==========================================
  Files          90       90              
  Lines       10225    10233       +8     
==========================================
+ Hits         9055     9059       +4     
- Misses       1170     1174       +4