当我激活我的插件时，插件管理器出错了

I have made my first wordpress plugin (share me), to share posts with different social networks.
But when I activate it, the plugin manager goes wrong! like you can see in the screen-shot below.

When my plugin is disable enter image description here

And when i activate it !

Wp plugin manager

This is the plugin description:

<?php
      /*
          Plugin Name: Share-me
          Description: Share posts on differents Social Networks
          Author: Me
          Version: 1.0.1
         */

Do you have any idea?