riseup-vpn does not start.

Run less ~/.config/leap/systray.log, and see the contents of the log

2021/01/28 15:45:36 Error starting VPN:  exit status 1
2021/01/28 15:46:42 Close: cleanup and vpn shutdown...
2021/01/28 15:46:42 firewall stop
2021/01/28 15:46:42 openvpn stop
2021/01/28 15:47:41 firewall stop
2021/01/28 15:47:41 openvpn stop
2021/01/28 15:47:43 firewall start
2021/01/28 15:47:43 Error while running bitmask-root:
2021/01/28 15:47:43 args:  [/usr/sbin/bitmask-root firewall start 198.252.153.28 212.83.165.160 212.83.182.127 212.129.37.129 212.129.4.141 212.129.62.247 212.83.144.12 212.129.4.124 212.83.146.228 163.172.126.44 212.83.143.67 199.58.83.12 199.58.83.10 185.220.103.12 37.218.244.249 37.218.244.251]
2021/01/28 15:47:43 output:  bitmask-root: ERROR: Could not determine state of iptable chain
bitmask-root: ERROR: Could not run ['/sbin/ip6tables', '--new-chain', 'bitmask']: None

Environment OS:Arch linux x86