Laravel Telescope Failed to open stream: no such file or directory TelescopeServiceProvider.php
Try update Telescope,
composer update --prefer-sourceTry removing Telescope and then reinstalling the package as the installation seems to have broken the package:
composer remove laravel/telescopecomposer require laravel/telescopeTry:
composer dump-autoloador:
artisan cache:clearafter you update or make changes to composer.json to refresh everything.
Perthe Telescope Github Issues
Telescope is not ready for Laravel 6 yet. Many people are having this same issue. The solution is to look at this issue.Although it is a workaround, not a solution.