fix: resolve swagger generation issues

[aeneasr]

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• I have read the contributing guidelines.
• I am following the
  contributing code guidelines.
• I have read the security policy.
• I confirm that this pull request does not address a security
  vulnerability. If this pull request addresses a security. vulnerability, I
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• I have added tests that prove my fix is effective or that my feature
  works.
• I have added or changed the documentation.

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