Why can't update composer.json in laravel 5.1?

Question

Composer

I need the forms in laravel 5 to work, but for some reason he does not want to update the plugins. Installed laravel 5.1 via composer project in PHPstrom 10. Everything was fine, but as soon as I want to update the plugins in composer.json, it gives me the following error in the terminal:

And here is my composer.json

What could be the error? And how to fix it.

Answer 1

There must be no commas before the closing brace in require / require_dev (after the laravelcollective/html and phpspec/phpspec elements). The JSON specification does not allow trailing commas.