Django - why I stuck? and solution

I know I should not waste my time here...but finally, I understood where the problem came from.

 

[I FORGOT TO ADD A CONTENTS IN THE ADMIN SECTOR. e.g. ROOMS, REVIEWS.]

 

Very easy. I just forgot to add them all again after I cleaned up the materials for the testing purpose.

 

Least now I know the code was perfect, and I can proceed to the next phase.

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If I face any error with a message "ModuleNotFoundError"; google it with the name of its non-existing module.

After that, just run pip install xxx.

 

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Finally fixed the issue...but random_sequence is not working.

I must fix this one by tomorrow morning.