Unable to POST a comment to a PR using the 2.0 API

[Jacob Bartlett]

I've been trying to script out 'posting a comment' to PR's in my repo as the final stage in our testing workflow. 

Here's the cURL command I'm using: 

curl -H "Content-Type: application/json" \

     -X POST \

     -d '{"content": {"raw": "sample text"}}' \

     'https://api.bitbucket.org/2.0/repositories/{my_username}/{my_repo_slug}/pullrequests/1/comments'

Unfortunately, I've been getting a 500 server error returned from this: 

{"type": "error", "error": {"message": "Something went wrong", "id": "108609ba088f47e98f70a1b119088765"}}

For test purposes, my repo is public so there are no authentication issues at all.

Am I missing anything? I have attempted a similar thing using the deprecated 1.0 API and got the same error.

Link to API documentation

https://developer.atlassian.com/bitbucket/api/2/reference/resource/repositories/%7Busername%7D/%7Brepo_slug%7D/pullrequests/%7Bpull_request_id%7D/comments?_ga=2.1079224.803810173.1549879103-1540948770.1548946271

Threads I've looked at so far

https://community.atlassian.com/t5/Answers-Developer-Questions/Are-you-planning-on-offering-an-update-pull-request-comment-API/qaq-p/526892 

https://community.atlassian.com/t5/Bitbucket-questions/Bitbucket-Cloud-REST-API-v2-0-Commenting-on-Pull-Requests/qaq-p/847107

FYI - I don't think I have enough reputation to reply more than every 24h so please give me an alternative way to respond to you. 

[Jacob Bartlett]

Update 
This is now working fine. It looks like the 500 Server Error was indeed a problem on the server-side.

Does anyone know what might have caused it / how frequently these issues should be anticipated?