thanks a lot: turned out that it has something to do with cups.
i commented out the modules that are not found. i guess the message will be gone.
osmc@B2RASP2:/usr/lib/modules-load.d$ sudo vi /etc/modules-load.d/cups-filters.conf
/# Parallel printer driver modules loading for cups
/# LOAD_LP_MODULE was ‘yes’ in /etc/default/cups
/#lp
/#ppdev
/#parport_pc
many many thanks for the help!