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Joi.validate(request, schema) this method doesnot work with default installation of joi, convert your joi package to 15.0.3 to pass ... Join this channel to get access to perks: My Gear Camera ... In this lecture let's learn how to handle uncaught Exceptions which might occur a Node still uses them so you should know how they work. Promises offer a great solution. You should check those out too. There is a common development pattern used in JavaScript, especially in 00:00:00 introduction 00:00:50 example 1 00:04:00 example 2 //
In this video I demonstrate how to use the built in promisify
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callback is not a function in node js
![TypeError [ERROR_INVALID_CALLBACK]: callback must be a function || solved](https://ytimg.googleusercontent.com/vi/N56ZKId-eNg/mqdefault.jpg)
TypeError [ERROR_INVALID_CALLBACK]: callback must be a function || solved
NodeJS : TypeError Joi.validate is not a function
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Last Updated: June 3, 2026
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![TypeError [ERROR_INVALID_CALLBACK]: callback must be a function || solved](https://i0.wp.com/ytimg.googleusercontent.com/vi/N56ZKId-eNg/mqdefault.jpg?resize=320,180)
![NodeJS : Error: .post() requires callback functions but got a [object Undefined] not working](https://i0.wp.com/ytimg.googleusercontent.com/vi/RPpay5ufnec/mqdefault.jpg?resize=320,180)
![TypeError [ERR_INVALID_CALLBACK]: Callback must be a function. Received undefined](https://i0.wp.com/ytimg.googleusercontent.com/vi/KUH8iXEtyCY/mqdefault.jpg?resize=320,180)
![NodeJS : Error: .post() requires callback functions but got a [object Undefined]](https://i0.wp.com/ytimg.googleusercontent.com/vi/I2aJoxO5B68/mqdefault.jpg?resize=320,180)
![Error: Route.get() requires a callback function but got a [object Undefined]](https://i0.wp.com/ytimg.googleusercontent.com/vi/j2u0p3srz0w/mqdefault.jpg?resize=320,180)
