MyChat Client error #0294: personal user group name can't be empty

"Debugging and troubleshooting", "List of MyChat Client errors", "Error #0294".
 
Error

Error #0294: personal user group name can't be empty
 

Error description

Personal group name must contain at least one character and not only spaces or tabulation symbols.

 
Problem solution

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