To solve visual studio code PHP intelephense keep showing not necessary error there are several ways.
The 1st option is to remove the "**/vendor/**" from the "exclude" settings available to the "intelephense" config.
Option 1: Update intelephense Settings
The 1st option is to remove the "**/vendor/**" from the "exclude" settings available to the "intelephense" config.
"intelephense.files.exclude": [
"**/vendor/**", <== remove this line!
"**/.git/**",
"**/.svn/**",
"**/.hg/**",
"**/CVS/**",
"**/.DS_Store/**",
"**/node_modules/**",
"**/bower_components/**",
"**/resources/views/**"
]Option 2: Install laravel-ide-helper
The 2nd option Install laravel-ide-helper which will generate all of the helper classes for intelephense.
composer require --dev barryvdh/laravel-ide-helper
Then run php artisan ide-helper:generate to generate a file to help the IDE understand facades. Do note that you might need to restart Visual Studio Code.
Option 3: Update intelephense undefinedTypes
The other possible options is to set the "undefinedTypes" of the "intelephense.diagnostics" to false. This solution is the simplest so far so it's highly recommended.
"intelephense.diagnostics.undefinedTypes": false
One of the other solutions is to update the extension if it's available so if you have this option, do update it and it might have just works.
