database/migrations/2016_11_28_192010_drop_smtp_config_encryption_default.php
public function up()
    {
        Schema::table('smtp_config', function(Blueprint $t){
            $t->string('encryption')->nullable()->default(null)->change();
        });
    }
public function up()
    {
        Schema::table('smtp_config', function(Blueprint $t){
            $t->string('encryption')->nullable()->default(null)->change();
        });
    }
public function up ( ) { Schema :: table ( 'smtp_config' , function ( Blueprint $ t ) { $ t -> string ( 'encryption' ) -> nullable ( ) -> default ( null ) -> change ( ) ; } ) ; }
Run the migrations.

@return void
Run the migrations .