Images not writing with my routines

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Note that there are some posts about this in the other topic, roughly from this post down:

All web pages return http 500 not sure why

Thanks but I think the problem is the page references have changed from my previous system i was on i was using var base64file2 = $("img#np_track_artwork").attr("src", "data:image/png;base64,"+data); To get the image base64 for the iage but dont think this working