Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires guzzlehttp/guzzle 7.9.2 (exact version match: 7.9.2 or 7.9.2.0), found guzzlehttp/guzzle[7.9.2] but the package is fixed to 7.4.1 (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.

Process completed with exit code 2.