fix: swagger-ui uncaught Invariant Violation

[ubogdan]

Describe the PR
fix uncaught Invariant Violation in swagger-ui

Relation issue
#69

Additional context
None

[codecov]

Codecov Report

Merging #70 (319bf2c) into master (285f7b0) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master       #70   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            1         1           
  Lines           88        88           
=========================================
  Hits            88        88           

Impacted Files	Coverage Δ
swagger.go	100.00% <ø> (ø)

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