PHP Deprecated

Message

unserialize(): Passing null to parameter #1 ($data) of type string is deprecated

Error at

app/addons/hybrid_auth/func.php, line: 200

Backtrace

SELECT 
  cscart_product_descriptions.product_id, 
  cscart_product_descriptions.short_description, 
  IF(
    cscart_product_descriptions.short_description = '' 
    OR cscart_product_descriptions.short_description IS NULL, 
    cscart_product_descriptions.full_description, 
    ''
  ) AS full_description 
FROM 
  cscart_product_descriptions 
WHERE 
  cscart_product_descriptions.product_id IN (
    90788, 90790, 90789, 90791, 90784, 90786, 
    90774, 90772, 90785, 90787, 90780, 
    90782, 90775, 90781, 90783, 90773, 
    90776, 90778, 90777, 90779, 90770, 
    90768, 90771, 90769, 90766, 90767, 
    90764, 90765, 90762, 90763, 90759, 
    90758, 90760, 90761, 90757, 90756
  ) 
  AND cscart_product_descriptions.lang_code = 'en'

Query time 0.00071

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "16.22"
    },
    "table": {
      "table_name": "cscart_product_descriptions",
      "access_type": "range",
      "possible_keys": [
        "PRIMARY",
        "product_id"
      ],
      "key": "PRIMARY",
      "used_key_parts": [
        "product_id",
        "lang_code"
      ],
      "key_length": "9",
      "rows_examined_per_scan": 36,
      "rows_produced_per_join": 36,
      "filtered": "100.00",
      "cost_info": {
        "read_cost": "12.62",
        "eval_cost": "3.60",
        "prefix_cost": "16.22",
        "data_read_per_join": "137K"
      },
      "used_columns": [
        "product_id",
        "lang_code",
        "short_description",
        "full_description"
      ],
      "attached_condition": "((`nuie_scalesta_net`.`cscart_product_descriptions`.`product_id` in (90788,90790,90789,90791,90784,90786,90774,90772,90785,90787,90780,90782,90775,90781,90783,90773,90776,90778,90777,90779,90770,90768,90771,90769,90766,90767,90764,90765,90762,90763,90759,90758,90760,90761,90757,90756)) and (`nuie_scalesta_net`.`cscart_product_descriptions`.`lang_code` = 'en'))"
    }
  }
}