framework: Internal dependency issue (Illuminate\Contracts\Debug\ExceptionHandler)

• Laravel Version: 5.3.16
• PHP Version: 7.0.8
• Database Driver & Version: MySQL 5.7.16

Description:

I started using Illuminate Database for a project, in isolation from the rest of the Laravel framework using composer require illuminate/database with the latest version.

A mistake with the connection configuration triggers the following error message, which doesn’t describe the problem at all, and doesn’t give any indication as to where the actual issue is:

PHP Fatal error:  Uncaught Illuminate\Contracts\Container\BindingResolutionException: Target [Illuminate\Contracts\Debug\ExceptionHandler] is not instantiable. in vendor/illuminate/container/Container.php:763
Stack trace:
#0 vendor/illuminate/container/Container.php(644): Illuminate\Container\Container->build('Illuminate\\Cont...', Array)
#1 vendor/illuminate/database/Connectors/ConnectionFactory.php(130): Illuminate\Container\Container->make('Illuminate\\Cont...')
#2 [internal function]: Illuminate\Database\Connectors\ConnectionFactory->Illuminate\Database\Connectors\{closure}()
#3 vendor/illuminate/database/Connection.php(964): call_user_func(Object(Closure))
#4 vendor/phpgt/database/src/Query/SqlQuery.php(46): Illuminate\Database\Connection->getPdo()
#5 vendor/phpgt/database/src/Query/SqlQuery.php(17): Gt\Database\Query\SqlQuery- in vendor/illuminate/container/Container.php on line 763

Steps To Reproduce:

When adding the database connection using Illuminate\Database\Capsule\Manager::addConnection (as described in the Database readme, line 5), I had a typo on the “charset” value. Instead of “utf8”, my associative array contained “utf-8”.

Further on in my code, I called Illuminate\Database\Connection::getPdo, which causes the above error to be output.

I assume the problem is a dependency issue between internal Laravel/Illuminate packages, so that an exception like “Invalid MySQL configuration” isn’t being able to be thrown.