Error handling notification for interface

Using version 2.0.1 :

networkd-dispatcher[1406437]: WARNING:Unknown index 59 seen, reloading interface list
networkd-dispatcher[1406437]: ERROR:Error handling notification for interface 'tun1' entering operational state routable
networkd-dispatcher[1406437]: Traceback (most recent call last):
networkd-dispatcher[1406437]:   File "/usr/bin/networkd-dispatcher", line 290, in _handle_one_state
networkd-dispatcher[1406437]:     self.run_hooks_for_state(new_iface, state)
networkd-dispatcher[1406437]:   File "/usr/bin/networkd-dispatcher", line 328, in run_hooks_for_state
networkd-dispatcher[1406437]:     'json': json.dumps(data, sort_keys=True),
networkd-dispatcher[1406437]:   File "/usr/lib/python3.8/json/__init__.py", line 234, in dumps
networkd-dispatcher[1406437]:     return cls(
networkd-dispatcher[1406437]:   File "/usr/lib/python3.8/json/encoder.py", line 199, in encode
networkd-dispatcher[1406437]:     chunks = self.iterencode(o, _one_shot=True)
networkd-dispatcher[1406437]:   File "/usr/lib/python3.8/json/encoder.py", line 257, in iterencode
networkd-dispatcher[1406437]:     return _iterencode(o, 0)
networkd-dispatcher[1406437]: TypeError: '<' not supported between instances of 'NoneType' and 'str'

systemd 246 (246.1-1-arch)
+PAM +AUDIT -SELINUX -IMA -APPARMOR +SMACK -SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +ZSTD +SECCOMP +BLKID +ELFUTILS +KMOD +IDN2 -IDN +PCRE2 default-hierarchy=hybrid