The entity known as Sentry has not been specified

After following a tutorial by JSMastery, I successfully created a portfolio website using Next.js. We also integrated Sentry into our app to allow users to report bugs. Everything was working perfectly fine on my local machine and even after deploying it on Vercel. However, when I accessed the live URL, an error suddenly appeared causing the app to crash. The error message stated "Sentry is not defined."

Error displayed on the screen: Application error: a client-side exception has occurred (check browser console for more information).

Below is the error shown in the console:

137-b94d377c6996f85c.js:446 TypeError: Cannot read properties of undefined (reading 'sentry')
    at 396-c590d500d7afd897.js:1:5927
    at Array.reduce (<anonymous>)
    at X (396-c590d500d7afd897.js:1:5912)
    at n (396-c590d500d7afd897.js:1:15030)
    at 396-c590d500d7afd897.js:1:151080
    at oM (396-c590d500d7afd897.js:1:154196)
    at oT (396-c590d500d7afd897.js:1:150126)
    at 396-c590d500d7afd897.js:1:149932
    at o_ (396-c590d500d7afd897.js:1:149940)
    at og (396-c590d500d7afd897.js:1:146805)
    at ov (396-c590d500d7afd897.js:1:145377)
    at P (396-c590d500d7afd897.js:1:177411)
typescriptnext.jsvercelsentry

Answer №1

Have you confirmed that the NextJS SDK is configured according to the instructions provided by Sentry? This includes setting up both client and server config files. Are you assigning the Sentry DSN to an environment variable? If so, in Vercel it's important to use NEXT_PUBLIC_SENTRY_DSN and ensure the correct prefix is used to make the variable accessible in the browser.

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