Course 4 Week3 UNET - Unexpected error occurred during function check

Code Cell UNQ_C3: Unexpected error (NameError(“name ‘ublock2’ is not defined”)) occurred during function check. We expected function unet_model to return unet_model test 1 failed. Please check that this function is defined properly.
If you see many functions being marked as incorrect, try to trace back your steps & identify if there is an incorrect function that is being used in other steps.
This dependency may be the cause of the errors.

i got 66 and this message.

in the notebook al my tests pass and i dont know what is ‘ublock2’
I have just cblock2. please help.

You’re expected to create the “ublock” variables in the Expanding Path part of the function.

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Some defect in your code is making the grader unhappy. This defect apparently was not caught by the unit tests.

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