Problem 1

- saviorlv/yii2-dingtalk[dev-master, 0.0.1, ..., 0.0.2] require guzzlehttp/guzzle ^6.3 -> found guzzlehttp/guzzle[6.3.0, ..., 6.5.x-dev] but the package is fixed to

7.1.x-dev (lock file version) by a partial update and that version does not match. Make sure you list it as an argument for the update command.

- saviorlv/yii2-dingtalk-exception dev-master requires saviorlv/yii2-dingtalk @dev -> satisfiable by saviorlv/yii2-dingtalk[dev-master, 0.0.1, 0.0.2].
- Root composer.json requires saviorlv/yii2-dingtalk-exception dev-master -> satisfiable by saviorlv/yii2-dingtalk-exception[dev-master].

Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.