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_products_categories.product_id, 
  GROUP_CONCAT(
    IF(
      cscart_products_categories.link_type = "M", 
      CONCAT(
        cscart_products_categories.category_id, 
        "M"
      ), 
      cscart_products_categories.category_id
    )
  ) AS category_ids, 
  product_position_source.position AS position 
FROM 
  cscart_products_categories 
  INNER JOIN cscart_categories ON cscart_categories.category_id = cscart_products_categories.category_id 
  AND cscart_categories.storefront_id IN (0, 1) 
  AND (
    cscart_categories.usergroup_ids = '' 
    OR FIND_IN_SET(
      0, cscart_categories.usergroup_ids
    ) 
    OR FIND_IN_SET(
      1, cscart_categories.usergroup_ids
    )
  ) 
  AND cscart_categories.status IN ('A', 'H') 
  LEFT JOIN cscart_products_categories AS product_position_source ON cscart_products_categories.product_id = product_position_source.product_id 
  AND product_position_source.category_id = 7251 
WHERE 
  cscart_products_categories.product_id IN (
    95733, 95734, 95735, 96153, 96170, 96171, 
    96172, 96173, 96174, 96175, 96537, 
    96559, 96560, 96561, 97057, 97058, 
    97953, 97954, 97955, 97956, 97957, 
    97958, 97994, 97995, 97996, 97997, 
    97998, 97999, 98000, 98496, 98497, 
    98498, 98499, 98500, 98501, 99026, 
    99027, 99028, 99029, 99030, 99032, 
    99033, 99034, 99035, 99036, 99037, 
    99038, 99039, 99040, 99041, 99042, 
    99043, 99044, 99045, 99046, 99047, 
    99048, 99049, 99319, 99320, 99321, 
    100413, 100428, 100429, 100430
  ) 
GROUP BY 
  cscart_products_categories.product_id

Query time 0.00623

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "97.50"
    },
    "grouping_operation": {
      "using_filesort": false,
      "nested_loop": [
        {
          "table": {
            "table_name": "cscart_products_categories",
            "access_type": "range",
            "possible_keys": [
              "PRIMARY",
              "link_type",
              "pt"
            ],
            "key": "pt",
            "used_key_parts": [
              "product_id"
            ],
            "key_length": "3",
            "rows_examined_per_scan": 108,
            "rows_produced_per_join": 108,
            "filtered": "100.00",
            "using_index": true,
            "cost_info": {
              "read_cost": "11.10",
              "eval_cost": "10.80",
              "prefix_cost": "21.90",
              "data_read_per_join": "1K"
            },
            "used_columns": [
              "product_id",
              "category_id",
              "link_type"
            ],
            "attached_condition": "(`nuie_scalesta_net`.`cscart_products_categories`.`product_id` in (95733,95734,95735,96153,96170,96171,96172,96173,96174,96175,96537,96559,96560,96561,97057,97058,97953,97954,97955,97956,97957,97958,97994,97995,97996,97997,97998,97999,98000,98496,98497,98498,98499,98500,98501,99026,99027,99028,99029,99030,99032,99033,99034,99035,99036,99037,99038,99039,99040,99041,99042,99043,99044,99045,99046,99047,99048,99049,99319,99320,99321,100413,100428,100429,100430))"
          }
        },
        {
          "table": {
            "table_name": "product_position_source",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY",
              "pt"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "category_id",
              "product_id"
            ],
            "key_length": "6",
            "ref": [
              "const",
              "nuie_scalesta_net.cscart_products_categories.product_id"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 108,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "27.00",
              "eval_cost": "10.80",
              "prefix_cost": "59.70",
              "data_read_per_join": "1K"
            },
            "used_columns": [
              "product_id",
              "category_id",
              "position"
            ]
          }
        },
        {
          "table": {
            "table_name": "cscart_categories",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY",
              "c_status",
              "p_category_id"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "category_id"
            ],
            "key_length": "3",
            "ref": [
              "nuie_scalesta_net.cscart_products_categories.category_id"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 5,
            "filtered": "5.00",
            "cost_info": {
              "read_cost": "27.00",
              "eval_cost": "0.54",
              "prefix_cost": "97.50",
              "data_read_per_join": "14K"
            },
            "used_columns": [
              "category_id",
              "usergroup_ids",
              "status",
              "storefront_id"
            ],
            "attached_condition": "((`nuie_scalesta_net`.`cscart_categories`.`storefront_id` in (0,1)) and ((`nuie_scalesta_net`.`cscart_categories`.`usergroup_ids` = '') or (0 <> find_in_set(0,`nuie_scalesta_net`.`cscart_categories`.`usergroup_ids`)) or (0 <> find_in_set(1,`nuie_scalesta_net`.`cscart_categories`.`usergroup_ids`))) and (`nuie_scalesta_net`.`cscart_categories`.`status` in ('A','H')))"
          }
        }
      ]
    }
  }
}