matrix error

gistfile1.txt

User=root
Group=nogroup

WorkingDirectory=/root/synapse
ExecStart=/root/synapse/env/bin/python -m synapse.app.homeserver --config-path=/root/synapse/homeserver.yaml
SyslogIdentifier=matrix-synapse
* matrix-synapse.service - Synapse Matrix homeserver
   Loaded: loaded (/etc/systemd/system/matrix-synapse.service; disabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Sun 2020-08-02 19:22:33 UTC; 23h ago
 Main PID: 22273 (code=exited, status=1/FAILURE)

Aug 02 19:22:33 kitson-chat matrix-synapse[22273]:     self.stale_possible_simple_keys()
Aug 02 19:22:33 kitson-chat matrix-synapse[22273]:   File "/root/synapse/env/lib/python3.6/site-packages/yaml/scanner.py", line 292, in stale_possible_simple_keys
Aug 02 19:22:33 kitson-chat matrix-synapse[22273]:     "could not find expected ':'", self.get_mark())
Aug 02 19:22:33 kitson-chat matrix-synapse[22273]: yaml.scanner.ScannerError: while scanning a simple key
Aug 02 19:22:33 kitson-chat matrix-synapse[22273]:   in "/root/synapse/homeserver.yaml", line 1384, column 3
Aug 02 19:22:33 kitson-chat matrix-synapse[22273]: could not find expected ':'
Aug 02 19:22:33 kitson-chat matrix-synapse[22273]:   in "/root/synapse/homeserver.yaml", line 1385, column 1
Aug 02 19:22:33 kitson-chat systemd[1]: matrix-synapse.service: Main process exited, code=exited, status=1/FAILURE
Aug 02 19:22:33 kitson-chat systemd[1]: matrix-synapse.service: Failed with result 'exit-code'.
Aug 02 19:22:33 kitson-chat systemd[1]: Failed to start Synapse Matrix homeserver.