Self hosted, docker-compose, PNG images not loading

Successfully installed on Fedora 43 server. Just about everything seems to be working, but I am getting http errors sometimes when i upload files, and when they do upload, the images are black with messed up white border corners. I’ve run through a maze of AI recommended fixes trying to fix permissions in the back-end volume and ensuring my secret keys are good, and such. Just wondering if there is some sort of requirement or issue with uploading PNG images for teams or persons, or just uploading files in general? Thanks.