PHP 7.2 and 7.3, and Laravel 5.x are no longer supported.
The handler URL environment has been simplified. Please change it like this:
# Before
STACKKIT_CLOUD_TASKS_HANDLER=https://my-app/handle-task
# After
STACKKIT_CLOUD_TASKS_HANDLER=https://my-app
It's also allowed to remove this variable entirely in 3.x: The package will automatically use the application URL if the STACKKIT_CLOUD_TASKS_HANDLER
environment is not present. If you omit it, please ensure the trusted proxy have been configured
in your application. Otherwise, you might run into weird issues. :-)