Slim Application Error

The application could not run because of the following error:

Details

Type: ErrorException
Code: 2
Message: A non-numeric value encountered
File: /var/www/vhosts/blackfridaydeverdade.com.br/classes/Helpers.php
Line: 391

Trace

#0 /var/www/vhosts/blackfridaydeverdade.com.br/classes/Helpers.php(391): Slim\Slim::handleErrors(2, 'A non-numeric v...', '/var/www/vhosts...', 391, Array)
#1 /var/www/vhosts/blackfridaydeverdade.com.br/routes/web.php(786): App\Model\Helpers->alphaID('c0', true)
#2 [internal function]: {closure}('c0', 'conhea-as-7-pri...')
#3 /var/www/vhosts/blackfridaydeverdade.com.br/vendor/slim/slim/Slim/Route.php(468): call_user_func_array(Object(Closure), Array)
#4 /var/www/vhosts/blackfridaydeverdade.com.br/vendor/slim/slim/Slim/Slim.php(1355): Slim\Route->dispatch()
#5 /var/www/vhosts/blackfridaydeverdade.com.br/vendor/slim/slim/Slim/Middleware/Flash.php(85): Slim\Slim->call()
#6 /var/www/vhosts/blackfridaydeverdade.com.br/vendor/slim/slim/Slim/Middleware/MethodOverride.php(92): Slim\Middleware\Flash->call()
#7 /var/www/vhosts/blackfridaydeverdade.com.br/vendor/slim/slim/Slim/Middleware/PrettyExceptions.php(67): Slim\Middleware\MethodOverride->call()
#8 /var/www/vhosts/blackfridaydeverdade.com.br/vendor/slim/slim/Slim/Slim.php(1300): Slim\Middleware\PrettyExceptions->call()
#9 /var/www/vhosts/blackfridaydeverdade.com.br/index.php(36): Slim\Slim->run()
#10 {main}