On php 8 I received pcntl error

[Ahmadrezagh]

Unable to subscribe to signal events. Make sure that the pcntl extension is installed and that "pcntl_*" functions are not disabled by your php.ini's "disable_functions" directive.

[PaolaRuby]

Laravel versión? OS? Package versión? Symfony/Console version?
Make sure that the pcntl extension is installed and that "pcntl_*" functions are not disabled by your php.ini's "disable_functions" directivo.

I'am using php 8.0.9 without problems

[Ahmadrezagh]

Laravel : 8
Os : Ubuntu 20.04
Package version : ^7.6
I can't find Symfony/Console in my composer.json file

this package work on my Macbook but when I upload it on server I received these errors

[PaolaRuby]

You can see the installed versions in composer.lock, not in composer.json
And what about this
"Make sure that the pcntl extension is installed and that "pcntl_*" functions are not disabled by your php.ini's "disable_functions" directivo."? Look at your php.ini