There are a couple of reasons why you might receive an error when attempting to upload a photo to Meetup.
Whether it’s for your profile, a group, or an event, photos must be smaller than 10 MB and be in JPG or PNG format. If you're still receiving an error, try uploading a photo without any visible text.
If you’re trying to upload a photo to a group's photo album, keep in mind that every album has a limit of 500 photos. But, there’s no limit to the number of albums a group can have. If the current one has hit its limit, just start a new one.