Can't install cachet. PHP error on composer install

[adrian-abit]

Hey! I tried to install cachet today but it does not want to work...

I followed the guide on https://docs.cachethq.io/docs/installing-cachet and started to install via $ composer install --no-dev -o

This throws this error:

php artisan optimize --force
Generating optimized class loader
Compiling common classes
PHP Fatal error: Uncaught ErrorException: count(): Parameter must be an array or an object that implements Countable in /var/www/Cachet/vendor/graham-campbell/exceptions/src/ExceptionIdentifier.php:51
Stack trace:
#0 [internal function]: Illuminate\Foundation\Bootstrap\HandleExceptions->handleError()
#1 /var/www/Cachet/vendor/graham-campbell/exceptions/src/ExceptionIdentifier.php(51): count()
#2 /var/www/Cachet/vendor/graham-campbell/exceptions/src/ExceptionHandlerTrait.php(47): GrahamCampbell\Exceptions\Except ionIdentifier->identify()
#3 /var/www/Cachet/vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/HandleExceptions.php(79): GrahamCampbell \Exceptions\ExceptionHandler->report()
#4 [internal function]: Illuminate\Foundation\Bootstrap\HandleExceptions->handleException()
#5 {main}
thrown in /var/www/Cachet/vendor/graham-campbell/exceptions/src/ExceptionIdentifier.php on line 51
PHP Fatal error: Uncaught ErrorException: count(): Parameter must be an array or an object that implements Countable in /var/www/Cachet/vendor/graham-campbell/exceptions/src/ExceptionIdentifier.php:51
Stack trace:
#0 [internal function]: Illuminate\Foundation\Bootstrap\HandleExceptions->handleError()
#1 /var/www/Cachet/vendor/graham-campbell/exceptions/src/ExceptionIdentifier.php(51): count()
#2 /var/www/Cachet/vendor/graham-campbell/exceptions/src/ExceptionHandlerTrait.php(47): GrahamCampbell\Exceptions\Except ionIdentifier->identify()
#3 /var/www/Cachet/vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/HandleExceptions.php(79): GrahamCampbell \Exceptions\ExceptionHandler->report()
#4 /var/www/Cachet/vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/HandleExceptions.php(118): Illuminate\Fo undation\Bootstrap\HandleExceptions->handleException()
#5 [internal function]: Illuminate\Foundation\Bootstrap\HandleExceptions->handleShutdown()
#6 {main}
thrown in /var/www/Cachet/vendor/graham-campbell/exceptions/src/ExceptionIdentifier.php on line 51
Script php artisan optimize --force handling the post-install-cmd event returned with error code 255

Could anyone help me resolve this problem?

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[asheroto]

I am also facing this issue

[monelgordillo]

I am also getting this issue as well.