1、修复bug

server/app/Providers/AppServiceProvider.php

@@ -32,7 +32,7 @@ class AppServiceProvider extends ServiceProvider
      */
     public function boot()
     {
-	    //Schema::defaultStringLength(191);
+	    Schema::defaultStringLength(191);
         $this->registerObservers(); // 注册观察者
     }
 

server/config/database.php

@@ -130,8 +130,6 @@ return [
 
     'migrations' => 'migrations',
 
-    'engine' => 'InnoDB ROW_FORMAT=DYNAMIC',
-
     /*
     |--------------------------------------------------------------------------
     | Redis Databases

server/database/migrations/2020_05_30_115810_create_users_table.php

@@ -35,9 +35,6 @@ class CreateUsersTable extends Migration
             $table->unsignedTinyInteger('lastlogin')->nullable()->comment('最后登陆时间');
 
             $table->timestamps();
-
-            $table->engine('InnoDB');
-
         });
         $columnNames = 'username';
         Schema::table($tableNames,function(Blueprint $table) use ($tableNames,$columnNames){