PermissionError: [Errno 13] error while attempting to bind on address ('0.0.0.0', 80): permission denied

[entangledothers]

Just tried out Airshare, but ran into this error after a successful pip install.

command run: airshare name filename.png

error message:
Traceback (most recent call last):
File "/home/gleam/anaconda3/bin/airshare", line 10, in
sys.exit(main())
File "/home/gleam/anaconda3/lib/python3.7/site-packages/click/core.py", line 764, in call
return self.main(*args, **kwargs)
File "/home/gleam/anaconda3/lib/python3.7/site-packages/click/core.py", line 717, in main
rv = self.invoke(ctx)
File "/home/gleam/anaconda3/lib/python3.7/site-packages/click/core.py", line 956, in invoke
return ctx.invoke(self.callback, **ctx.params)
File "/home/gleam/anaconda3/lib/python3.7/site-packages/click/core.py", line 555, in invoke
return callback(*args, **kwargs)
File "/home/gleam/anaconda3/lib/python3.7/site-packages/airshare/cli.py", line 73, in main
send_server(code=code, file=files, port=port)
File "/home/gleam/anaconda3/lib/python3.7/site-packages/airshare/sender.py", line 216, in send_server
loop.run_until_complete(site.start())
File "/home/gleam/anaconda3/lib/python3.7/asyncio/base_events.py", line 579, in run_until_complete
return future.result()
File "/home/gleam/anaconda3/lib/python3.7/site-packages/aiohttp/web_runner.py", line 104, in start
reuse_port=self._reuse_port)
File "/home/gleam/anaconda3/lib/python3.7/asyncio/base_events.py", line 1374, in create_server
% (sa, err.strerror.lower())) from None
PermissionError: [Errno 13] error while attempting to bind on address ('0.0.0.0', 80): permission denied

setup:
pop os 20.04
conda 4.8.3

[nandahkrishna]

Duplicate of #5. Ensure that nothing else is running on port 80, or try unblocking the port if it's blocked (check ufw if you're on Linux). Otherwise, you can use any other ports as suggested by @mohanpierce99.

[entangledothers]

That was the ticket, thanks! Nothing visibly running on port 80, so I'll dive into what might be blocking it.