When Construct's Javascript coding feature was launched in 2019, all the scripts in a project ran as classic mode scripts. This is how Javascript has run in web...
Classic scripts have been deprecated since November 2020. Support for them was already removed in r242, but this has not yet come to a stable release.
oh gosh, this is quite terrifying news Ashley. I will start investigating my next step on Monday. Hopefully I can rewrite the camera routines and rid my dependency of magicam. (this will break all the cut-scenes in the game however) o_O I hope I can fix this quickly enough.