Weired error when deploying to Vercel

Hey Andy,

I'm getting this error when deploying to Vercel. Its works perfectly on localhost and also works on another project in production. I'm not sure what is the problem here.

Thanks in advance.

```
2022-07-30T17:05:23.242Z c8ac1e5d-fa6e-494e-a5dc-6aeb3433a2f3 ERROR TypeError: Cannot read properties of null (reading 'useRef')
at Object.exports.useRef (/var/task/node_modules/fielder/node_modules/react/cjs/react.production.min.js:25:337)
at exports.useForm (/var/task/node_modules/fielder/dist/index.js:1:5004)
at Pay (/var/task/.next/server/pages/pay.js:111:67)
at Hc (/var/task/node_modules/react-dom/cjs/react-dom-server.browser.production.min.js:64:191)
at Kc (/var/task/node_modules/react-dom/cjs/react-dom-server.browser.production.min.js:66:253)
at Z (/var/task/node_modules/react-dom/cjs/react-dom-server.browser.production.min.js:71:89)
at Kc (/var/task/node_modules/react-dom/cjs/react-dom-server.browser.production.min.js:70:13)
at Z (/var/task/node_modules/react-dom/cjs/react-dom-server.browser.production.min.js:71:89)
at Kc (/var/task/node_modules/react-dom/cjs/react-dom-server.browser.production.min.js:66:481)
at Z (/var/task/node_modules/react-dom/cjs/react-dom-server.browser.production.min.js:71:89)
2022-07-30T17:05:23.268Z c8ac1e5d-fa6e-494e-a5dc-6aeb3433a2f3 ERROR TypeError: Cannot read properties of null (reading 'useRef')
at Object.exports.useRef (/var/task/node_modules/fielder/node_modules/react/cjs/react.production.min.js:25:337)
at exports.useForm (/var/task/node_modules/fielder/dist/index.js:1:5004)
at Pay (/var/task/.next/server/pages/pay.js:111:67)
at Hc (/var/task/node_modules/react-dom/cjs/react-dom-server.browser.production.min.js:64:191)
at Kc (/var/task/node_modules/react-dom/cjs/react-dom-server.browser.production.min.js:66:253)
at Z (/var/task/node_modules/react-dom/cjs/react-dom-server.browser.production.min.js:71:89)
at Kc (/var/task/node_modules/react-dom/cjs/react-dom-server.browser.production.min.js:70:13)
at Z (/var/task/node_modules/react-dom/cjs/react-dom-server.browser.production.min.js:71:89)
at Kc (/var/task/node_modules/react-dom/cjs/react-dom-server.browser.production.min.js:66:481)
at Z (/var/task/node_modules/react-dom/cjs/react-dom-server.browser.production.min.js:71:89) {
page: '/pay'
}
RequestId: c8ac1e5d-fa6e-494e-a5dc-6aeb3433a2f3 Error: Runtime exited with error: exit status 1
Runtime.ExitError

```