migrations/2018_03_16_000000_make_settings_value_nullable.php
public function down()
    {
        Schema::table('settings', function (Blueprint $table) {
            $table->text('value')->nullable(false)->change();
        });
    }
public function down()
    {
        Schema::table('settings', function (Blueprint $table) {
            $table->text('value')->nullable(false)->change();
        });
    }
Reverse the migrations.

@return void