fix(cluster_info): fix error for hosts/disks/statistics page

[baurine]

This PR fixes the following error pages:

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[codecov]

Codecov Report

Attention: Patch coverage is 0% with 20 lines in your changes are missing coverage. Please review.

Project coverage is 23.68%. Comparing base (c32ca0c) to head (3b9def8).

Additional details and impacted files

@@             Coverage Diff             @@
##           master    #1664       +/-   ##
===========================================
+ Coverage    8.99%   23.68%   +14.68%     
===========================================
  Files         131      177       +46     
  Lines       13704    16055     +2351     
===========================================
+ Hits         1233     3802     +2569     
+ Misses      12338    11968      -370     
- Partials      133      285      +152     

Flag	Coverage Δ
backend_integration	8.98% <0.00%> (-0.01%)	⬇️
backend_ut	26.19% <ø> (?)

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