Theme Selector Errors Out

I am on a de-Googled CAT S22 Flip phone so a very low memory device but I used to be able to load themes without a hitch. Recently, however, most of the themes error out with a message like this:

Error message: OutOfMemoryError(OOM allocating Bitmap with dimensions 1843 x 4096)

Error occurred with Niagara Launcher v1.15.12 on a Cat device which runs Android 11 on 2026-03-03T16:02:59Z. My crash user id is '2a12cd5b-f342-4b77-9e67-1d443f061ef9'.