Problem 1
- Can only install one of: yiisoft/yii2-gii[2.0.x-dev, 2.1.0].
- Can only install one of: yiisoft/yii2-gii[2.0.x-dev, 2.1.0].
- schmunk42/yii2-giiant dev-master requires yiisoft/yii2-gii ~2.0.6 -> satisfiable by yiisoft/yii2-gii[2.0.x-dev].
- Installation request for schmunk42/yii2-giiant dev-master -> satisfiable by schmunk42/yii2-giiant[dev-master].
- Installation request for yiisoft/yii2-gii ~2.1.0 -> satisfiable by yiisoft/yii2-gii[2.1.0].
fix error: