Hi, all.
Endpoint "/rest/tinymce/1/wikixhtmlconverter" returns error BadRequest: 400 : [Could not find content with contentId: 0]
It worked for a long time, but some time ago it started to return "Bad Request".
Approximately in this time ConfuenceServer was upgraded to newer version 7.13. May be it is the reason..
How to fix this trouble?