add_comment_to_object fails using params kwarg

[dschein]

The implementation of Insights.add_comment_to_object uses
self.api.post(url, params=params)
which results in

atlassian.rest_client - DEBUG - curl --silent -X POST -H 'Content-Type: application/json' -H 'Accept: application/json'  'https://example.com/rest/insight/1.0/comment/create?comment=script+Testing3&objectId=2193999&role=0'
atlassian.rest_client - DEBUG - HTTP: POST rest/insight/1.0/comment/create -> 500 
atlassian.rest_client - DEBUG - HTTP: Response text -> {"errorMessages":["Something went wrong. Contact administrator"],"errors":{}}

A workaround is to use the data keyword arg instead of params as in
self.api.post(url, data=params)
resulting in

atlassian.rest_client - DEBUG - curl --silent -X POST -H 'Content-Type: application/json' -H 'Accept: application/json' --data '"{\"comment\": \"script Testing3\", \"objectId\": 2193999, \"role\": 0}"' 'https://example.com/rest/insight/1.0/comment/create'
atlassian.rest_client - DEBUG - HTTP: POST rest/insight/1.0/comment/create -> 201 
atlassian.rest_client - DEBUG - HTTP: Response text -> {"created":"2025-10-28T18:04:57.072Z","updated":"2025-10-28T18:04:57.072Z","id":3370,"actor":{"avatarUrl":"https://www.gravatar.com/avatar/3328707d366f7e019fe0f33b0bf887ad?d=mm&s=48","displayName":"..." aria-label=\"Show user information\" aria-haspopup=\"dialog\"><span class=\"aui-icon aui-icon-small aui-iconfont-info-filled user-hover-trigger-icon\"></span></button></span>","isDeleted":false},"role":0,"comment":"script Testing3","commentOutput":"script Testing3","objectId":2193999,"canEdit":true,"canDelete":true}

I don't know if it is the server or library that needs fixing.