Permission denied for setting port to 443(Ubuntu 18.04.3 LTS)

Hi,
When I set my site to port 443 I get permission problems I can’t even set the port as root.

See below:
erp@odin:~/frappe-bench$ sudo bench --site erp.site1.com serve --port 444
Traceback (most recent call last):
File “/usr/lib/python3.6/runpy.py”, line 193, in _run_module_as_main
main”, mod_spec)
File “/usr/lib/python3.6/runpy.py”, line 85, in _run_code
exec(code, run_globals)
File “/home/erp/frappe-bench/apps/frappe/frappe/utils/bench_helper.py”, line 97, in
main()
File “/home/erp/frappe-bench/apps/frappe/frappe/utils/bench_helper.py”, line 18, in main
click.Group(commands=commands)(prog_name=‘bench’)
File “/home/erp/frappe-bench/env/lib/python3.6/site-packages/click/core.py”, line 764, in call
return self.main(*args, **kwargs)
File “/home/erp/frappe-bench/env/lib/python3.6/site-packages/click/core.py”, line 717, in main
rv = self.invoke(ctx)
File “/home/erp/frappe-bench/env/lib/python3.6/site-packages/click/core.py”, line 1137, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File “/home/erp/frappe-bench/env/lib/python3.6/site-packages/click/core.py”, line 1137, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File “/home/erp/frappe-bench/env/lib/python3.6/site-packages/click/core.py”, line 956, in invoke
return ctx.invoke(self.callback, **ctx.params)
File “/home/erp/frappe-bench/env/lib/python3.6/site-packages/click/core.py”, line 555, in invoke
return callback(*args, **kwargs)
File “/home/erp/frappe-bench/env/lib/python3.6/site-packages/click/decorators.py”, line 17, in new_func
return f(get_current_context(), *args, **kwargs)
File “/home/erp/frappe-bench/apps/frappe/frappe/commands/init.py”, line 25, in _func
ret = f(frappe._dict(ctx.obj), *args, **kwargs)
File “/home/erp/frappe-bench/apps/frappe/frappe/commands/utils.py”, line 545, in serve
frappe.app.serve(port=port, profile=profile, no_reload=no_reload, no_threading=no_threading, site=site, sites_path=‘.’)
File “/home/erp/frappe-bench/apps/frappe/frappe/app.py”, line 247, in serve
threaded=not no_threading)
File “/home/erp/frappe-bench/env/lib/python3.6/site-packages/werkzeug/serving.py”, line 988, in run_simple
s.bind(server_address)
PermissionError: [Errno 13] Permission denied

I can set and run nginx on port 443 but not this.

Running on Ubuntu 18.04.3 LTS