composer require nunomaduro/phpinsights --dev
Using version ^2.3 for nunomaduro/phpinsights
./composer.json has been updated
Running composer update nunomaduro/phpinsights
Loading composer repositories with package information
Updating dependencies
Your requirements could not be resolved to an installable set of packages.
Problem 1
- Root composer.json requires nunomaduro/phpinsights ^2.3 -> satisfiable by nunomaduro/phpinsights[v2.3.0].
- nunomaduro/phpinsights v2.3.0 requires psr/simple-cache ^1.0 -> found psr/simple-cache[1.0.0, 1.0.1] but the package is fixed to 2.0.0 (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.
Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.
You can also try re-running composer require with an explicit version constraint, e.g. "composer require nunomaduro/phpinsights:*" to figure out if any version is installable, or "composer require nunomaduro/phpinsights:^2.1" if you know which you need.
My composer.json: