Check if report exist when celery task failed

[CFarcy]

No description provided.

[submarcos]

changelog please

[codecov]

Codecov Report

Merging #381 (e3ca11a) into master (9620d7c) will increase coverage by 0.04%.
Report is 1 commits behind head on master.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #381      +/-   ##
==========================================
+ Coverage   94.95%   95.00%   +0.04%     
==========================================
  Files          79       79              
  Lines        2834     2842       +8     
==========================================
+ Hits         2691     2700       +9     
+ Misses        143      142       -1     

Flag	Coverage Δ
backend-unittests	95.00% <100.00%> (+0.04%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
project/geosource/periodics.py	85.71% <100.00%> (ø)
project/geosource/tasks.py	94.11% <100.00%> (+1.96%)	⬆️

... and 1 file with indirect coverage changes