TypeError: Router.use() requires a middleware function but got a Object

The error message "TypeError: Router.use() requires a middleware function but got an Object" occurs in Go when the use() method of a router is called with an object instead of a middleware function. This error message is indicating that the router is expecting a function to be passed as an argument, but an object was provided instead. To better understand this error and how to fix it, let's break down the explanation into steps:

1. Router: In Go, a router is an object that handles the routing of incoming HTTP requests to the appropriate handler functions.

2. use() method: The use() method is a function provided by the router object that allows you to add middleware to the router. Middleware functions are functions that are executed before the final request handler. They can modify the request or response objects, perform additional processing, or terminate the request-response cycle.

3. Middleware function: A middleware function in Go is a function that takes in three arguments: http.ResponseWriter, *http.Request, and http.HandlerFunc. It performs some processing on the request or response and then either passes the request to the next middleware function or terminates the request-response cycle.

4. Object: In Go, an object refers to any instance of a struct or a data type that has been defined in the code. It can have properties and methods associated with it.

In summary, the error message "TypeError: Router.use() requires a middleware function but got an Object" is indicating that the use() method of a router in Go was called with an object instead of a middleware function. To fix this error, you need to ensure that you are passing a valid middleware function as an argument to the use() method.