I am getting a blank page when creating/editing any category or product. debug gives me
--> PHP Warning: Use of undefined constant FILENAME_PRODUCT_MUSIC_INFO - assumed 'FILENAME_PRODUCT_MUSIC_INFO' (this will throw an Error in a future version of PHP) in pathtomystore.com/includes/extra_datafiles/ceon_uri_mapping_product_pages.php on line 26.

I am using php 7.2. Is this the source of my problem?