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Problem 1
itexia/yii2-bootstrap-table 0.0.4 requires bower-asset/bootstrap-table-fixed-columns dev-master -> satisfiable by bower-asset/bootstrap-table-fixed-columns[dev-master] but these conflict with your requirements or minimum-stability.
itexia/yii2-bootstrap-table 0.0.3 requires bower-asset/bootstrap-table-fixed-columns dev-master -> satisfiable by bower-asset/bootstrap-table-fixed-columns[dev-master] but these conflict with your requirements or minimum-stability.
itexia/yii2-bootstrap-table 0.0.2 requires bower-asset/bootstrap-table-fixed-columns dev-master -> satisfiable by bower-asset/bootstrap-table-fixed-columns[dev-master] but these conflict with your requirements or minimum-stability.
itexia/yii2-bootstrap-table 0.0.1 requires bower-asset/bootstrap-table-fixed-columns dev-master -> satisfiable by bower-asset/bootstrap-table-fixed-columns[dev-master] but these conflict with your requirements or minimum-stability.
Installation request for itexia/yii2-bootstrap-table * -> satisfiable by itexia/yii2-bootstrap-table[0.0.1, 0.0.2, 0.0.3, 0.0.4].
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