post screenshot of the error you encountered rather than sharing links to your assignment or posting any codes. It is violation of Code of Conduct.
there is solution ?
you have probably hard coded your codes for the exercise you are failing as it mentions size limit.
Check if you have correct call arguments and not used any global variables in the get word frequency grade cell
Looking at the results from the notebook’s unit test for get_word_frequency() your code does not work correctly.
For example:
Perhaps you have not implemented this instruction correctly:
# If the word is not already in the dictionary, manually add it. Remember that you will start every word count as 1 both in spam and ham