"Debugging and troubleshooting", "List of MyChat Client errors", "Error #0326".
 
Error

Error #0326: you have no rights for remote execution of server scripts
 

Error description

You cannot execute the server script from MyChat Client because it is prohibited by user group rights.
 
Problem solution

You need to enable a group rule for remote execution of server scripts ("Rights control", "Permission groups", "Integration API", "Allow remote script execution [244]") or transfer the user to a rights group where this rule is enabled.