Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.
Problem 1
yiister/yii2-gentelella 1.3.1 requires bower-asset/gentelella * -> no matching package found.
yiister/yii2-gentelella 1.3.0 requires bower-asset/gentelella * -> no matching package found.
yiister/yii2-gentelella 1.2.5 requires bower-asset/gentelella * -> no matching package found.
yiister/yii2-gentelella 1.2.4 requires bower-asset/gentelella * -> no matching package found.
yiister/yii2-gentelella 1.2.3 requires bower-asset/gentelella * -> no matching package found.
yiister/yii2-gentelella 1.2.2 requires bower-asset/gentelella * -> no matching package found.
yiister/yii2-gentelella 1.2.1 requires bower-asset/gentelella * -> no matching package found.
yiister/yii2-gentelella 1.2.0 requires bower-asset/gentelella * -> no matching package found.
yiister/yii2-gentelella 1.1.4 requires bower-asset/gentelella ~1.3 -> no matching package found.
yiister/yii2-gentelella 1.1.3 requires bower-asset/gentelella ~1.3 -> no matching package found.
yiister/yii2-gentelella 1.1.2 requires bower-asset/gentelella ~1.3 -> no matching package found.
yiister/yii2-gentelella 1.1.1 requires bower-asset/gentelella ~1.3 -> no matching package found.
yiister/yii2-gentelella 1.1.0 requires bower-asset/gentelella ~1.3 -> no matching package found.
yiister/yii2-gentelella 1.0.0 requires bower-asset/gentelella ~1.3 -> no matching package found.
yiister/yii2-gentelella 1.3.1 requires bower-asset/gentelella * -> no matching package found.
yiister/yii2-gentelella 1.3.0 requires bower-asset/gentelella * -> no matching package found.
yiister/yii2-gentelella 1.2.5 requires bower-asset/gentelella * -> no matching package found.
yiister/yii2-gentelella 1.2.4 requires bower-asset/gentelella * -> no matching package found.
yiister/yii2-gentelella 1.2.3 requires bower-asset/gentelella * -> no matching package found.
yiister/yii2-gentelella 1.2.2 requires bower-asset/gentelella * -> no matching package found.
yiister/yii2-gentelella 1.2.1 requires bower-asset/gentelella * -> no matching package found.
yiister/yii2-gentelella 1.2.0 requires bower-asset/gentelella * -> no matching package found.
yiister/yii2-gentelella 1.1.4 requires bower-asset/gentelella ~1.3 -> no matching package found.
yiister/yii2-gentelella 1.1.3 requires bower-asset/gentelella ~1.3 -> no matching package found.
yiister/yii2-gentelella 1.1.2 requires bower-asset/gentelella ~1.3 -> no matching package found.
yiister/yii2-gentelella 1.1.1 requires bower-asset/gentelella ~1.3 -> no matching package found.
yiister/yii2-gentelella 1.1.0 requires bower-asset/gentelella ~1.3 -> no matching package found.
yiister/yii2-gentelella 1.0.0 requires bower-asset/gentelella ~1.3 -> no matching package found.
Loading composer repositories with package information Updating dependencies (including require-dev) Your requirements could not be resolved to an installable set of packages.
Problem 1
Potential causes:
Read https://getcomposer.org/doc/articles/troubleshooting.md for further common problems.