Why is my Auth flow not working after deployment.

[ChrisB007]

My auth flow works perfectly in my local environment (sign in -> redirect -> dashboard) which got me excited, but after I deployed the app and tried testing the login I got an error: "Try signing in with a different account."

And when I checked function log on vercel I got these printed out:

[GET] /api/auth/callback/google?state=WFZx_ZSwmn32wbLWvehiCKazS08eWoQ_fy8zpCI0qfs&code=4%2F0AX4XfWg1z1fu44-jHIVKomNz0lKOn4w_3wbyoHJ2QEIXbom5rSppBzq2Xi0wdYyrrdTx-w&scope=email+profile+openid+https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fuserinfo.email+https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fuserinfo.profile&authuser=0&prompt=none
01:59:50:69
2022-03-25T05:59:50.821Z	79b72153-c0bf-4160-8bdf-b4e0df9fff3a	ERROR	[next-auth][error][adapter_error_getUserByAccount] 
https://next-auth.js.org/errors#adapter_error_getuserbyaccount Cannot read property 'findUnique' of undefined {
  message: "Cannot read property 'findUnique' of undefined",
  stack: "TypeError: Cannot read property 'findUnique' of undefined\n" +
    '    at getUserByAccount (/var/task/node_modules/@next-auth/prisma-adapter/dist/index.js:11:45)\n' +
    '    at _callee2$ (/var/task/node_modules/next-auth/core/errors.js:315:29)\n' +
    '    at tryCatch (/var/task/node_modules/regenerator-runtime/runtime.js:63:40)\n' +
    '    at Generator.invoke [as _invoke] (/var/task/node_modules/regenerator-runtime/runtime.js:294:22)\n' +
    '    at Generator.next (/var/task/node_modules/regenerator-runtime/runtime.js:119:21)\n' +
    '    at asyncGeneratorStep (/var/task/node_modules/@babel/runtime/helpers/asyncToGenerator.js:3:24)\n' +
    '    at _next (/var/task/node_modules/@babel/runtime/helpers/asyncToGenerator.js:25:9)\n' +
    '    at /var/task/node_modules/@babel/runtime/helpers/asyncToGenerator.js:32:7\n' +
    '    at new Promise (<anonymous>)\n' +
    '    at /var/task/node_modules/@babel/runtime/helpers/asyncToGenerator.js:21:12',
  name: 'TypeError'
}
2022-03-25T05:59:50.822Z	79b72153-c0bf-4160-8bdf-b4e0df9fff3a	ERROR	[next-auth][error][OAUTH_CALLBACK_HANDLER_ERROR] 
https://next-auth.js.org/errors#oauth_callback_handler_error Cannot read property 'findUnique' of undefined TypeError: Cannot read property 'findUnique' of undefined
    at getUserByAccount (/var/task/node_modules/@next-auth/prisma-adapter/dist/index.js:11:45)
    at _callee2$ (/var/task/node_modules/next-auth/core/errors.js:315:29)
    at tryCatch (/var/task/node_modules/regenerator-runtime/runtime.js:63:40)
    at Generator.invoke [as _invoke] (/var/task/node_modules/regenerator-runtime/runtime.js:294:22)
    at Generator.next (/var/task/node_modules/regenerator-runtime/runtime.js:119:21)
    at asyncGeneratorStep (/var/task/node_modules/@babel/runtime/helpers/asyncToGenerator.js:3:24)
    at _next (/var/task/node_modules/@babel/runtime/helpers/asyncToGenerator.js:25:9)
    at /var/task/node_modules/@babel/runtime/helpers/asyncToGenerator.js:32:7
    at new Promise (<anonymous>)
    at /var/task/node_modules/@babel/runtime/helpers/asyncToGenerator.js:21:12 {
  name: 'GetUserByAccountError',
  code: undefined
}

Can you help resolve this? Any pointers will be appreciated.

Thanks in advance