The TaifunImage extension needs an
TaifunImage
Your path looks like this: /Pictures/app_inventor_1648147559973.jpg and this is NOT a path (in this case), but the File component can handle it, because it redirects it to the ASD if the FileScope is set to App (default setting).
/Pictures/app_inventor_1648147559973.jpg
File
FileScope
See also here: