kartik-v/yii2-icons dev-master requires kartik-v/yii2-krajee-base >=3.0.4 -> found kartik-v/yii2-krajee-base[v3.0.4] but the package is fixed to v3.0.2 (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.

Prerequisites

[ ] I have searched for similar issues in both open and closed tickets and cannot find a duplicate.
[ ] The issue still exists against the latest master branch of yii2-icons.
[ ] This is not an usage question. I confirm having gone through and read the documentation and demos.
[ ] This is not a general programming / coding question. (Those should be directed to the webtips Q & A forum).
[ ] I have attempted to find the simplest possible steps to reproduce the issue.
[ ] I have included a failing test as a pull request (Optional).

"php.exe" "composer.phar" "--ansi" "--no-interaction" "require" "kartik-v/yii2-icons:dev-master"

When I follow those steps, I see...

Your requirements could not be resolved to an installable set of packages.

Problem 1

Root composer.json requires kartik-v/yii2-icons dev-master -> satisfiable by kartik-v/yii2-icons[dev-master].
kartik-v/yii2-icons dev-master requires kartik-v/yii2-krajee-base >=3.0.4 -> found kartik-v/yii2-krajee-base[v3.0.4] but the package is fixed to v3.0.2 (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.

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

Installation failed, reverting ./composer.json and ./composer.lock to their original content.

I was expecting...

install ok