Mech-DLK training error - Label related

We got this error message when we were trying to train the model using Mech-DLK.
What could be the cause for this issue?


Please note that in Mech-DLK, the label name only supports English letters and numbers. If special characters, including letters from other languages, are used, it may result in the error shown in the picture.

For detailed analysis, please scroll down and share the entire alarm message with us.