Adding error log when script notifier is not executable

[emiliocuestaf]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 50.00000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 47.05%. Comparing base (b34ddf9) to head (920ca16).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/cpp/StatisticsBackend.cpp	50.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #294   +/-   ##
=======================================
  Coverage   47.05%   47.05%           
=======================================
  Files          54       54           
  Lines       17092    17094    +2     
  Branches     7129     7131    +2     
=======================================
+ Hits         8042     8043    +1     
  Misses       4514     4514           
- Partials     4536     4537    +1     

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