<ul><li>One common error developers face when working with authentication in Next.js and Clerk is the 'Clerk: auth() was called but it looks like you aren't using authMiddleware in your middleware file' message.</li><li>The error occurs when the middleware system in Next.js is not correctly configured to route requests through the authMiddleware, causing authentication failures or unhandled routes.</li><li>To resolve this error, developers need to verify and update their middleware setup, ensure correct matcher configuration, check API route implementations, test the setup, and handle deployment properly.</li><li>Attention to detail in configuring authMiddleware and API routes is crucial for successful authentication setup using Clerk in Next.js TypeScript applications.</li></ul>

How to Fix Clerk AuthMiddleware Errors in TypeScript?

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