"Debugging and troubleshooting", "List of MyChat Client errors", "Error #0269".
Error MyChat Client #0269: plugin "XX" has no function "YY"
Impossible to load the plugin because its DLL library has no specified function.
As a rule, it means that the plugin does not match MyChat requirements about additional programs format, or you are trying to upload a corrupted or outdated library.
Download and install th latest version of the plugin on the official website.