步骤1：

在项目内激发此命令

php artisan optimize:clear

步骤2：

如果在本地，则启动项目：

php artisan serve

然后连接数据库。

来自@ThandoHlophe的建议
*

我发现了这个问题，所以我的~bash目录中的$PATH不正确，我更新了$PATH，然后就解决了这个问题

这是一个简单的错误，你仍然没有在mysql或phpmyadmin中创建名为thevinesa的数据库

DB_DATABASE=thevinesa

Laravel尝试找出要连接的数据库名称thevinesa，但他们没有找到名为thevinesa的数据库。尝试创建数据库。然后迁移。

php artisan cache:clear
php artisan config:clear

php artisan migrate

与数据库相关的命令

migrate:fresh        Drop all tables and re-run all migrations

migrate:install      Create the migration repository
  migrate:refresh      Reset and re-run all migrations
  migrate:reset        Rollback all database migrations
  migrate:rollback     Rollback the last database migration
  migrate:status       Show the status of each migratioin

或者

Laravel无法连接到您的数据库。
转到Storage->logs->laravel.log文件，您将发现错误
或者如果您在linux中，您可以使用php artisan migrate -v。它将显示错误详细信息。
数据库是你创建的吗
检查您是否有bootstrap\cache\config.php文件。如果有，请删除它。
我没有发现任何pdoException错误，但是如果您更改了

`config->database.php`   file

这是我的config->databse.php尝试比较这些代码取自LaravelFramework7.30.4，它可能是不同的，但你可以有一个基本的想法.

'mysql' => [
            'driver' => 'mysql',
            'url' => env('DATABASE_URL'),
            'host' => env('DB_HOST', '127.0.0.1'),
            'port' => env('DB_PORT', '3306'),
            'database' => env('DB_DATABASE', 'forge'),
            'username' => env('DB_USERNAME', 'forge'),
            'password' => env('DB_PASSWORD', ''),
            'unix_socket' => env('DB_SOCKET', ''),
            'charset' => 'utf8mb4',
            'collation' => 'utf8mb4_unicode_ci',
            'prefix' => '',
            'prefix_indexes' => true,
            'strict' => true,
            'engine' => null,
            'options' => extension_loaded('pdo_mysql') ? array_filter([
                PDO::MYSQL_ATTR_SSL_CA => env('MYSQL_ATTR_SSL_CA'),
            ]) : [],
        ],

如果要检查版本

php artisan -v

可能是工匠会发生错误。现在这是我的工匠从LaravelFramework7.30.4和php 7.2看看它，如果你没有发现任何可疑的东西，没有改变你的工匠文件采取副本或备份。并尽快给我看你的错误日志。

#!/usr/bin/env php
<?php

define('LARAVEL_START', microtime(true));

/*
|--------------------------------------------------------------------------
| Register The Auto Loader
|--------------------------------------------------------------------------
|
| Composer provides a convenient, automatically generated class loader
| for our application. We just need to utilize it! We'll require it
| into the script here so that we do not have to worry about the
| loading of any our classes "manually". Feels great to relax.
|
*/

require __DIR__.'/vendor/autoload.php';

$app = require_once __DIR__.'/bootstrap/app.php';

/*
|--------------------------------------------------------------------------
| Run The Artisan Application
|--------------------------------------------------------------------------
|
| When we run the console application, the current CLI command will be
| executed in this console and the response sent back to a terminal
| or another output device for the developers. Here goes nothing!
|
*/

$kernel = $app->make(Illuminate\Contracts\Console\Kernel::class);

$status = $kernel->handle(
    $input = new Symfony\Component\Console\Input\ArgvInput,
    new Symfony\Component\Console\Output\ConsoleOutput
);

/*
|--------------------------------------------------------------------------
| Shutdown The Application
|--------------------------------------------------------------------------
|
| Once Artisan has finished running, we will fire off the shutdown events
| so that any final work may be done by the application before we shut
| down the process. This is the last thing to happen to the request.
|
*/

$kernel->terminate($input, $status);

exit($status);

如果你在一个使用MAMP的MAC上，把这个添加到我的.env文件中对我很有效
DB_SOCKET=/Applications/MAMP/tmp/mysql/mysql.sock