sqlite3.IntegrityError) NOT NULL constraint failed: server.v6_subnet

[chemax]

Describe the bug You cannot create server without ipv6 support from web

To Reproduce Steps to reproduce the behavior:

1. Go to 'New WireGuard Server'
2. Be sure not check "IPv6 Support"
3. Scroll down to 'add server' and press it
4. See error

Platform:

• OS: Ubuntu 20.04
• Browser Vivaldi

• Version git-commit

  root@ubuntu:~/wg-manager# git log
  commit e70ba4bdc288318bc164fe696750a0c40ed1fac6 (HEAD -> main, origin/main, origin/HEAD)
  Merge: 60f067d 16a0e0a
  Author: Per-Arne Andersen <per@sysx.no>
  Date:   Thu Jul 15 16:05:47 2021 +0200
  
  Merge pull request #109 from hmrodrigues/fix/create_user
  
  Added missing import

  Stacktrace/error output

  
  sqlalchemy.exc.IntegrityError: (sqlite3.IntegrityError) NOT NULL constraint failed: server.v6_subnet
  [SQL: INSERT INTO server (interface, subnet, address, v6_address, v6_subnet, listen_port, private_key, public_key, endpoint, dns, allowed_ips, keep_alive, read_only, post_up, post_down, is_running, configuration) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)]
  [parameters: ('wg0', 24, '10.0.200.1', None, None, 51820, 'CFPOnZFlq8la8HT99YZvVDANc+LDA0bTkaLJxcNEO1c=', 'L01CpZEZ3q23KN2txDKnW6zzeGS04RYV027xVX+jImI=', '192.168.113.80', '1.1.1.1,8.8.8.8', '0.0.0.0/0', 5, 0, 'iptables -A FORWARD -i %i -j ACCEPT; iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE;', 'iptables -D FORWARD -i %i -j ACCEPT; iptables -t nat -D POSTROUTING -o eth0 -j MASQUERADE;', 0, '[Interface]\nAddress = 10.0.200.1/24\nListenPort = 51820\nPrivateKey = CFPOnZFlq8la8HT99YZvVDANc+LDA0bTkaLJxcNEO1c=\n\n\nPostUp = iptables -A FORWARD ... (31 characters truncated) ... at -A POSTROUTING -o eth0 -j MASQUERADE;\n\nPostDown = iptables -D FORWARD -i %i -j ACCEPT; iptables -t nat -D POSTROUTING -o eth0 -j MASQUERADE;\n\n')]
  (Background on this error at: http://sqlalche.me/e/13/gkpj)

**Screenshots**
https://i.imgur.com/uH4545c.png

[mailo84]

anybody fix please