Help !

[MsZhu]

Problem 1
- Root composer.json requires league/booboo ^2.1 -> satisfiable by league/booboo[2.1].
- league/booboo 2.1 requires psr/log ~1.0 -> found psr/log[1.0.0, ..., 1.1.4] but the package is fixed to 3.0.0 (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.