楼主，第六部出现
Problem 1

- yiisoft/yii2 2.0.x-dev requires bower-asset/jquery.inputmask ~3.2.2 -> no

matching package found.

- yiisoft/yii2 dev-master requires bower-asset/jquery.inputmask ~3.2.2 -> no

matching package found.

- yiisoft/yii2 2.0.8 requires bower-asset/jquery 2.2.*@stable | 2.1.*@stable

| 1.11.*@stable -> no matching package found.

- yiisoft/yii2 2.0.7 requires bower-asset/jquery 2.2.*@stable | 2.1.*@stable

| 1.11.*@stable -> no matching package found.

- yiisoft/yii2 2.0.6 requires bower-asset/jquery 2.1.*@stable | 1.11.*@stabl

e -> no matching package found.

- Installation request for yiisoft/yii2 >=2.0.6 -> satisfiable by yiisoft/yi

i2[2.0.6, 2.0.7, 2.0.8, dev-master, 2.0.x-dev].

Potential causes:

• A typo in the package name
• The package is not available in a stable-enough version according to your min
  imum-stability setting
  see https://getcomposer.org/doc/04-schema.md#minimum-stability for more det
  ails.

Read https://getcomposer.org/doc/articles/troubleshooting.md for further commo
n problems.

请问这个是什么问题呢？求解。