Call to undefined function asset() in Laravel project

Process:

I am using Laravel 5.5 and had the same problem recently so I did a bit of debugging. Here are the steps:

1. Since the error was Call to undefined function asset() I checked the helpers.php in the Laravel repo to see if it existed. https://github.com/laravel/framework/blob/5.5/src/Illuminate/Foundation/helpers.php#L127 and it did.

   if (! function_exists('asset')) { /** * Generate an asset path for the application. * * @param string $path * @param bool $secure * @return string */ function asset($path, $secure = null) { return app('url')->asset($path, $secure); } } 

2. I looked on my local copy of Laravel and see if that same line existed, it did.

3. However my local copy was different than what was on the repo. This is how it looked:

   if (! function_exists('asset')) { /** * Generate an asset path for the application. * * @param string $path * @param bool $secure * @return string */ function mixasset($path, $secure = null) { return app('url')->asset($path, $secure); } } 

4. At some point, Laravel Mix seems to have changed asset() to mixasset().

Result:

Try using mixasset() as opposed to asset(). Otherwise delete your vendors folder and rebuild it by running composer install. This should get you the latest copy of your Laravel version with the correct asset() helper method.

The asset() is already point to your public folder so, don't specify the public in your asset() Change your asset('public/js/app.js') to asset('js/app.js')

My Err: Call to undefined function set_active()...., when I move some functions in Laravel 5.2 to Laravel 6.x ... My solution: 1. Added below in composer.json "autoload": { "classmap": [ "database" ], "psr-4": { "App\": "app/" }, "files": [ "app/helpers.php" . => New added ] } 2.run composer install it works for me.