Mark returns "400 Bad Request: com.atlassian.confluence.api.service.exceptions.BadRequestException: Content body cannot be converted to new editor format"

[AX-LLaidley]

What happened?
I have several files that fail to sync to Confluence, returning the following error:

{"statusCode":400,"data":{"authorized":true,"valid":true,"errors":[],"successful":true},"message":"com.atlassian.confluence.api.service.exceptions.BadRequestException: Content body cannot be converted to new editor format"}
2023-09-12 16:14:15.283 FATAL Confluence API returned unexpected status: 400 Bad Request, output: "{\"statusCode\":400,\"data\":{\"authorized\":true,\"valid\":true,\"errors\":[],\"successful\":true},\"message\":\"com.atlassian.confluence.api.service.exceptions.BadRequestException: Content body cannot be converted to new editor format\"}"

What did you expect to happen?
I expected all the files in the GHA job to be properly synced to Confluence, in their specified locations.

** Information (please complete the following information):**

• Mark Version (mark --version): 9.9.0
• Mark Parameters: --trace
• Confluence Version: Cloud
• Environment specific Information: Running in GHA

** Logs or other output**
Example log files with the bearer token stripped out:
Device-Details-Errorlog.txt
RC-Caveats-ErrorLog.txt
RC-FAQ-ErrorLog.txt

Additional context
Add any other context about the problem here.

[jimmcslim]

I am also experiencing this issue, I wonder if it is related to #364 ?

[AX-LLaidley]

Entirely possible. This error is a bane to my sanity. Not sure what the cause is though. I have several docs that cannot be synced to Confluence due to this issue.