C3W1_Assignment Upload Button missing

When the grader is trying to parse the output of the tokenize_labels an UNEXPECTED ERROR occurs saying that the output of that code block is too long.
The ERROR Details ask me to search here if anyone has/had the same problem.
I didn’t find anyone till now, but might be someone can help.

Hello @Peter_Grabner,

You can send your notebook to me via direct message (DM) by clicking on my profile picture and selecting the option to send a message. There, you will be able to attach your notebook, and we can discuss the problems here, in the thread you created.