Using a different jpg, I was able to get a better error from browser console (in addition to thee NS_ERROR_NOT_AVAILABLE error) [Exception... "Component returned failure code: 0x80040111 (NS_ERROR_NOT_AVAILABLE) [nsIContentSniffer.getMIMETypeFromContent]" nsresult: "0x80040111 (NS_ERROR_NOT_AVAILABLE)" location: "JS frame :: resource:///modules/FaviconLoader.jsm :: onStopRequest :: line 298" data: no] FaviconLoader.jsm:298:24
Bug 1663826 Comment 1 Edit History
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Using a different jpg, I was able to get a better error from browser console: [Exception... "Component returned failure code: 0x80040111 (NS_ERROR_NOT_AVAILABLE) [nsIContentSniffer.getMIMETypeFromContent]" nsresult: "0x80040111 (NS_ERROR_NOT_AVAILABLE)" location: "JS frame :: resource:///modules/FaviconLoader.jsm :: onStopRequest :: line 298" data: no] FaviconLoader.jsm:298:24