Images not showing up when running online task

I’ve been working on trying to make a staircase expression task, where the stimulus images change per ‘block’ to put it simply. I have a custom code based on Rebecca Hirst / interleaved-staircase · GitLab, but the problem is when I run it online the images don’t pull in, even though the stimuli will say they were loaded into the program. Please let me know if you have any ideas!

My custom code is: