"Debugging and troubleshooting", "List of MyChat Client errors","Error #0094".
 

Error

Error #0094: unable to rename group, because the original group (ID XXX) does not exist

 

Error description

When trying to change the name of the group, it turned out that the index of the original group of personal contacts is incorrect, or there is no group with such an index on the server.

 

Problem solution

If you work with MyChat via API or directly using an open network protocol, fix transferred data.