Doorman doesn't execute process after method "Tick"

[bmora07]

I work in a php7.2 environment with Linux 16 and I am using Doorman to handle threads. The process adds the tasks well, however, once the "Tick" method is executed, the task is not executed and no process appears in the list of processes related to the created task. The task does not run. I do not know if it is a problem with the version of php or the operating system that I use since it also does not show any error when executing the code. Thank you.