Unable to upload PDB file

Got this error message when attempting to upload PDB file 6XRZ (a Das Lab contribution) in drupal. I’ve never received an error message when uploading a 3D file previously. Typically the system lets me upload the file then the puzzle doesn’t open if the file doesn’t match the puzzle correctly.
Screen Shot 2023-08-31 at 8.22.27 AM

From console: Failed to load resource: the server responded with a status of 413 ()

CIF produced this message: /filefield/ahah/puzzle/field_puzzle_3d_structure/0:1 POST https://eternagame.org/filefield/ahah/puzzle/field_puzzle_3d_structure/0 413

Looks like I forgot to increase the file upload size limit in a config - should be resolved now.