Don't know what happened exactly, but i went in to get a longer log and, while deleting groups of images still does not work for me, I was able to individually delete them after some frustration. The bad gateway entries appeared when i was returned aforementioned error by the browser. Failed to load resource: the server responded with a status of 403 (Forbidden) yourlibrary.js:102 Object <a href="https://marketplace.roll20.net/library/deletefavs" rel="nofollow">https://marketplace.roll20.net/library/deletefavs</a> Failed to load resource: the server responded with a status of 502 (Bad Gateway) yourlibrary.js?v=30:102 Object {imageid: "7931514", is_user_uploaded: 1} jquery.min.js:4 POST <a href="https://marketplace.roll20.net/library/deletefavs" rel="nofollow">https://marketplace.roll20.net/library/deletefavs</a> 502 (Bad Gateway) yourlibrary.js?v=30:102 Object {imageid: "7931546", is_user_uploaded: 1} jquery.min.js:4 POST <a href="https://marketplace.roll20.net/library/deletefavs" rel="nofollow">https://marketplace.roll20.net/library/deletefavs</a> 502 (Bad Gateway) yourlibrary.js?v=30:102 Object {imageid: "7931551", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7931545", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7931546", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7931517", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7931506", is_user_uploaded: 1} jquery.min.js:4 POST <a href="https://marketplace.roll20.net/library/deletefavs" rel="nofollow">https://marketplace.roll20.net/library/deletefavs</a> 502 (Bad Gateway) yourlibrary.js?v=30:102 Object {imageid: "7931503", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7931487", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7931477", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7931468", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7931464", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7931461", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7931461", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7931460", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7931447", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7931445", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7931443", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7931435", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7931114", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7931091", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7930324", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7929352", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7929346", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7929346", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7928871", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7928871", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7928863", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7928863", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7928863", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7928659", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7928624", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7928437", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7928430", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7928269", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7901212", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7901805", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7901759", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7901392", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7931542", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7901119", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7862586", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7931543", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7862568", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7862303", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7862292", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7862292", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7862200", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7860814", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7860783", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7785855", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7774577", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7774571", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7774565", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7774564", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7774551", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7774545", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7774540", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "7588359", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "9498832", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "9498794", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "9498608", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "9497444", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "9497363", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "9498860", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "9497347", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "9497021", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "9496979", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "9497021", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "9575774", is_user_uploaded: 1} jquery.min.js:4 POST <a href="https://marketplace.roll20.net/library/deletefavs" rel="nofollow">https://marketplace.roll20.net/library/deletefavs</a> 502 (Bad Gateway) yourlibrary.js?v=30:102 Object {imageid: "9935135", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "9934302", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "9934372", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "9935200", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "9935245", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "9935293", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "9935262", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "9935357", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "9935371", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "9935338", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "9935321", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "9935305", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "9935375", is_user_uploaded: 1} yourlibrary.js?v=30:102 Object {imageid: "9935421", is_user_uploaded: 1}