Phalcon findby结果计数为-1

Question

I have a working phalcon application. I moved it from windows to linux server everything works proper. But when i want to use phalcon model findby resultset it returns different result. I use Phalcon 2.0.13

$userRoles = UserRoles::findByUserId($userId);               
var_dump($userRoles->count()); //Returns -1
var_dump(count($userRoles)); // Returns -1
var_dump(count($userRoles->toArray())); // Returns 3 and when i var_dump result result is right there are 3 records

foreach ($userRoles as $role) { //This foreach doesnt work because result length is -1           
    $roleArr = Auth::rolesParse($role->role_id);
    $roles = array_merge_recursive($roles, $roleArr);
}

I have many samples of this code, so converting all the resultsets to array is not solution to me. I don't know is it about php extensions, configuration or phalcon configuration

(array)[Number of Elements: 3]
0: 
(array)[Number of Elements: 3]
"id": 
(string) 2049
"role_id": 
(string) 1
"user_id": 
(string) 28
1: 
(array)[Number of Elements: 3]
"id": 
(string) 2050
"role_id": 
(string) 2
"user_id": 
(string) 28
2: 
(array)[Number of Elements: 3]
"id": 
(string) 2051
"role_id": 
(string) 3
"user_id": 
(string) 28