string('due_start')->default('')->change(); $table->string('due_end')->default('')->change(); $table->string('due_start')->nullable()->change(); $table->string('due_end')->nullable()->change(); }); } /** * Reverse the migrations. */ public function down(): void { Schema::table('todos', function (Blueprint $table) { $table->string('due_start')->default('')->change(); $table->string('due_end')->default('')->change(); $table->string('due_start')->nullable()->change(); $table->string('due_end')->nullable()->change(); }); } };