E-Commerce Page using HTMl CSS JS and bootstrap

Had issues with bootstrap here - the indicator buttons i was going to use on the carousel weren't working as meant to, when I include them in the build trying to scroll through more than one picture using the buttons, or leaving it to scroll itself would give an error "Uncaught TypeError: Cannot read properties of null (reading 'classList')"

Pretty sure i've got everything correct, all the target classes match. I could have included the indicators just as images without the functionality but decided to leave it until i can do it properly