I got this error sometimes when I’m trying to add a new item. It’s not seem to be a problem related to the size of data that I try to save because when I try to upload it again, it works. In addition of the error “CRSF : Invalid or missing CRSF token” the item is not add to my Omeka. I saw that this type of error occured for different reasons. If you have an idea of what I can do to avoid this particular problem
Thanks for your help!