Hi all,
The GET_LANG(system_error,System error) is a small displaying error caused by our language tool that failed to import this language token.
Regarding "Fail to load implementation file" issue, due to an old bug that we fixed recently, this message was not displayed. It appears when the implementation file for a device is not found on the gateway of the device parameters are wrong specified. This can be caused by manually created device from what I could see after debugging some units with this issue. To fix this issue you will need to delete the device that is showing the error like this :
http://gateway_address:3480/data_request?id=device&action=delete&device=device_id
All the Best,
- Andrei -