SeaHub failed to start - initial setup

During initial setup, SeaFile starts fine. Can’t start SeaHub on ANY port. Error:Seahub failed to start.

It asks me to try again but fails every time. No firewall rules either.

codycayote@test-env:~/Backups-Cody/seafile-server-7.1.4$ ./ start-fastcgi

LC_ALL is not set in ENV, set to en_US.UTF-8
Starting seahub (fastcgi) at …
Traceback (most recent call last):
File “/home/codycayote/Backups-Cody/seafile-server-7.1.4/seahub/”, line 10, in
File “/home/codycayote/Backups-Cody/seafile-server-7.1.4/seahub/thirdpart/django/core/management/”, line 364, in execute_from_command_line
File “/home/codycayote/Backups-Cody/seafile-server-7.1.4/seahub/thirdpart/django/core/management/”, line 338, in execute
File “/home/codycayote/Backups-Cody/seafile-server-7.1.4/seahub/thirdpart/django/”, line 27, in setup
File “/home/codycayote/Backups-Cody/seafile-server-7.1.4/seahub/thirdpart/django/apps/”, line 85, in populate
app_config = AppConfig.create(entry)
File “/home/codycayote/Backups-Cody/seafile-server-7.1.4/seahub/thirdpart/django/apps/”, line 94, in create
module = import_module(entry)
File “/usr/lib/python3.6/importlib/”, line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File “”, line 994, in _gcd_import
File “”, line 971, in _find_and_load
File “”, line 953, in _find_and_load_unlocked
ModuleNotFoundError: No module named ‘captcha’
Error:Seahub failed to start.

As in previous post you are missing some python 3 staff. Just go to server manual and check the section on upgrading to 7.1.x. There it tells you which python extras you need to install (like “captcha”). As of 7.1. python 2 is not anymore supported.