[JavaScript Error: "Component returned failure code: 0x804b000a (NS_ERROR_MALFORMED_URI) [nsIIOService.newURI]" {file: "chrome://zotero/content/xpcom/storage/webdav.js" line: 205}]
Upload image file with the file dialog or by dragging and dropping images onto the dashed region
Upgrade Storage
If you can't figure it out, can you provide a Debug ID for a verification attempt that fails?