Err:unable to parse authentication credentials

if we ran any command in the CLI getting below error

Microsoft Windows [Version 10.0.17763.2928]
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C:\masthan\influxdb-1.8.10-1>influx
Connected to http://localhost:8086 version 1.8.5
InfluxDB shell version: 1.8.10
> show databases
ERR: unable to parse authentication credentials
Warning: It is possible this error is due to not setting a database.
Please set a database with the command "use ".
>
> create user admin
ERR: unable to parse authentication credentials
Warning: It is possible this error is due to not setting a database.
Please set a database with the command "use ".
> influx setup
ERR: unable to parse authentication credentials
Warning: It is possible this error is due to not setting a database.
Please set a database with the command "use ".
> sudo systemctl stop influxdb
ERR: unable to parse authentication credentials
Warning: It is possible this error is due to not setting a database.
Please set a database with the command "use ".
>
>

Can anyone help me on this issue.

Influxdb screenshot attached.

The issue provides only a Windows CLI transcript for InfluxDB 1.8.5/1.8.10 and names no source files or tests. Reproduce the commands against the reported setup, then trace the authentication error and its warning to identify the affected CLI or server path; done requires a confirmed cause, a scoped fix, and regression coverage.

Written by the indexing model from the issue text.