Laravel passport works perfect on localhost in different ports but Client authentication failed on cpanel hosting production

• Passport Version: 10.4.1
• Laravel Version: 9.19
• PHP Version: 8.1
• Database Driver & Version: libmysql - mysqlnd 7.4.30

Description:

I have my both oauth and consumer server live on a same machine and in different subdomains (it's a cpanel shared hosting). My both application works well on localhost in different ports but when I deploy the oauth server returns the following error. I have checked everything more than 20 times and spent 2 days on it and tried all possible solutions that I found on issues and other communities. Somebody says that passport won't work if they are on the same machine.. So how can I host these 2 applications on my cpanel hosting?

^ {#1251 ▼
  +"error": "invalid_client"
  +"error_description": "Client authentication failed"
  +"message": "Client authentication failed"
}

Steps To Reproduce:

Create a oauth server and a consumer server with everything setup as the docs and then try to deploy them to a single cpanel hosting account.