Fix not showing error log when helm command failed

[jlandowner]

Close #115

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 80.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 79.53%. Comparing base (989b4bb) to head (d66fbd9).
Report is 1 commits behind head on main.

Files	Patch %	Lines
pkg/charts/snap.go	0.00%	1 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##             main     #136      +/-   ##
==========================================
+ Coverage   79.49%   79.53%   +0.03%     
==========================================
  Files          16       16              
  Lines        1024     1026       +2     
==========================================
+ Hits          814      816       +2     
  Misses        141      141              
  Partials       69       69              

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