Laravel Migration Error

Question

I cant seem to work out why I am getting this error on this migration file?

Error

[37;41m [Symfony\Component\Debug\Exception\FatalThrowableError] ←[39;49m ←[37;41m Call to a member function nullable() on null ←[39;49m

The date on the file is after the foreign id creation in the Customers table.This is laravel 5.3. How can I resolve this error?

public function up()
{
    Schema::create('invoices', function (Blueprint $table) {
        $table->increments('id');
        $table->timestamps();           
        $table->integer('customer_id')->unsigned();
        $table->timestamps('date_from')->nullable();
        $table->timestamps('date_to')->nullable();
        $table->date('invoice_date')->nullable();
        $table->date('due_at')->nullable();     
        $table->integer('total_charge')->nullable();
        $table->integer('rate')->nullable();
        $table->integer('total_hours')->nullable();
        $table->string('status')->nullable();
        $table->string('description', 255)->nullable();
        $table->string('notes', 255)->nullable();
        $table->string('invoice_ref')->nullable();  

        $table->foreign('customer_id')
              ->references('id')->on('customers')
              ->onDelete('cascade');                      
    });
}

Answer 1

Use timestamp method in this two lines...

$table->timestamp('date_from')->nullable();
$table->timestamp('date_to')->nullable();

timestamps() not accepts any argument and creates two colums : created_at and updated_at See Here