Missing or invalid component

OJS I have suddenly a problem in uploading a galley file. The file size is ok (only 252 kb) and I have bene able to upload other files until yesterday.
Any suggestions? Thanks!!

Hi @lsteele,

This is probably an issue with file permissions within your files_dir (see config.inc.php). These can be accidentally reset by server admin work, e.g. an upgrade or restore from backup. Alternately, it could be a change to your PHP configuration to disable or restrict uploads by file size or similar.

Alec Smecher
Public Knowledge Project Team