Internal Server Error

Invalid argument supplied for foreach()

[/var/www/html/vendor/bcosca/fatfree/lib/base.php:2261] Base->error()
[/var/www/html/app/models/RestEntityHasServices.php:33] Base->{closure}()
[/var/www/html/app/controllers/Entities.php:186] app\models\RestEntityHasServices->EntityHasServiceList()
[/var/www/html/vendor/bcosca/fatfree/lib/base.php:1873] app\controllers\Entities->see()
[/var/www/html/vendor/bcosca/fatfree/lib/base.php:1673] Base->call()
[index.php:69] Base->run()