drag png problem summary

[hanxiao]

• ✅ drag a png (in data uri) from same page
• ✅ drag a png from local
• ❌ drag a png (with http src) from the same page -> broken, expected behavior need to be discussed
  • option 1, convert it to datauri in the frontend and
  • option 2, recognize it as url and download it at the backend

      chunk_seg@ 8[E]:expecting data URI, but got http://pngimg.com/uploads/pokemon/pokemon_PNG149.png
      chunk_seg@ 8[E]:unknown exception: 'NoneType' object has no attribute 'items'
Traceback (most recent call last):
  File "/usr/local/lib/python3.7/site-packages/jina/peapods/pea.py", line 358, in run
    self.loop_body()
  File "/usr/local/lib/python3.7/site-packages/jina/peapods/pea.py", line 323, in loop_body
    msg = self.zmqlet.recv_message(callback=self.msg_callback)
  File "/usr/local/lib/python3.7/site-packages/jina/peapods/zmq.py", line 223, in recv_message
    return callback(msg)
  File "/usr/local/lib/python3.7/site-packages/jina/peapods/pea.py", line 301, in msg_callback
    return self._callback(msg)
  File "/usr/local/lib/python3.7/site-packages/jina/peapods/pea.py", line 291, in _callback
    self.pre_hook(msg).handle(msg).post_hook(msg)
  File "/usr/local/lib/python3.7/site-packages/jina/peapods/pea.py", line 179, in handle
    self.executor(self.request_type)
  File "/usr/local/lib/python3.7/site-packages/jina/executors/__init__.py", line 537, in __call__
    d()
  File "/usr/local/lib/python3.7/site-packages/jina/drivers/craft.py", line 74, in __call__
    for k, v in ret.items():
AttributeError: 'NoneType' object has no attribute 'items'

• ❌ drag a png (with http src) from another tab -> no effect, backend receive nothing
• ❌ drag a png (in data uri) from another tab (you can drag one from https://github.com/jina-ai/examples/blob/master/pokedex-with-bit/result.html) -> no effect, backend receive nothing