Fix error message

[sungam3r]

fixes #1367

[codecov-commenter]

Codecov Report

Merging #1962 (2426e6a) into master (9ed4092) will decrease coverage by 0.14%.
Report is 1 commits behind head on master.
The diff coverage is 33.33%.

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@@            Coverage Diff             @@
##           master    #1962      +/-   ##
==========================================
- Coverage   66.27%   66.13%   -0.14%     
==========================================
  Files         250      250              
  Lines        8653     8653              
  Branches      618      618              
==========================================
- Hits         5735     5723      -12     
- Misses       2762     2772      +10     
- Partials      156      158       +2     

Flag	Coverage Δ
UI	65.49% <33.33%> (-0.29%)	⬇️

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

Files Changed	Coverage Δ
.../Discovery/K8S/KubernetesDiscoveryHostedService.cs	27.48% <0.00%> (ø)
...ks.UI/Core/Notifications/WebHookFailureNotifier.cs	46.95% <0.00%> (ø)
...I/Core/Discovery/K8S/KubernetesDiscoveryOptions.cs	80.00% <100.00%> (ø)

... and 1 file with indirect coverage changes