Fix migration on SQLite database

database/migrations/2018_07_26_130617_add_verification_to_users_table.php

@@ -25,6 +25,13 @@ class AddVerificationToUsersTable extends Migration
      */
     public function down()
     {
+        if (config('database.default') == 'sqlite') {
+            // Dropping columns from a SQLite database requires `doctrine/dbal` dependency.
+            // However, we won't install it because it's too hard to specify the version of
+            // all the new dependencies exactly to make them support PHP ^5.5.9. Damn it.
+            return;
+        }
+
         Schema::table('users', function (Blueprint $table) {
             $table->dropColumn('verified');
             $table->dropColumn('verification_token');