'Getting invalid_grant error while generating access token using Laravel\Passport

I am using laravel 8.40 and passport 10.3. I want to generate token without authorization. for that I have followed the laravel passport documentation. But when I try to generate token using the following sippent

grant_type:password
client_id:959f0346-0848-4aca-af63-ed77daba2561
client_secret:lLSI6Yg4RRh5ZaH00fAaVhcU9C5Zd8ITfe9XTO8H
username:[email protected]
password:password
scope:*

though my credentials are correct I test on my web guard, I am getting this response

 {
    "error": "invalid_grant",
    "error_description": "The user credentials were incorrect.",
    "message": "The user credentials were incorrect."
   }


Solution 1:[1]

Just replace

"grant_type":password

to

"grant_type":client_credentials

Sources

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Source: Stack Overflow

Solution Source
Solution 1 sahkashif