Kyrne
Problem 1
- kyrne/websocket[2.8.0, ..., 2.8.5] require guzzlehttp/psr7 ^1.5 -> found guzzlehttp/psr7[1.5.0, ..., 1.8.2] but it conflicts with your root composer.json require (^2.0).
- Root composer.json requires kyrne/websocket ^2.8 -> satisfiable by kyrne/websocket[2.8.0, ..., 2.8.5].
Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.