Is there any way to fix Checkpoint value error in DB connect?

[Sirius_27]

I'm using 3.10 version of DB connect app, but on one of the Heavy forwarder I'm getting below error.

Invalid key in stanza [APP NAME] in /SPLUNK/splunk/etc/apps/CONNECTION_NAME/local/db_inputs.conf, line 235: checkpoint_key (value: 638de13816f31a4b64728e8c).

Is there any way to fix these ?

[PaulPanther]

@Sirius_27 I'm pretty sure that the checkpoint_key must be a numerical value. Did you set up the affected input in the UI?