[API]When I get access and refresh token, it was error.

I want to use Zoho Sprints API is REST .

I did Initial setup.

I successed to get code by 'Generate grant token' .

When I get access and refresh token, it was error.

Error message is {"error":"invalid_client"}.

I executed within one minute of the code expiration date, but I get an error.

Please support me.

Thank you.

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