object(PDOException)#54 (8) {
  ["message":protected]=>
  string(94) "SQLSTATE[22001]: String data, right truncated: 1406 Data too long for column 'errstr' at row 1"
  ["string":"Exception":private]=>
  string(0) ""
  ["code":protected]=>
  string(5) "22001"
  ["file":protected]=>
  string(89) "/var/www/otouczelnie/test/application/includes/classes/core/PDOStatementWrapper.class.php"
  ["line":protected]=>
  int(22)
  ["trace":"Exception":private]=>
  array(4) {
    [0]=>
    array(5) {
      ["file"]=>
      string(89) "/var/www/otouczelnie/test/application/includes/classes/core/PDOStatementWrapper.class.php"
      ["line"]=>
      int(22)
      ["function"]=>
      string(7) "execute"
      ["class"]=>
      string(12) "PDOStatement"
      ["type"]=>
      string(2) "->"
    }
    [1]=>
    array(5) {
      ["file"]=>
      string(69) "/var/www/otouczelnie/test/application/custom_classes/ErrorManager.php"
      ["line"]=>
      int(33)
      ["function"]=>
      string(7) "execute"
      ["class"]=>
      string(19) "PDOStatementWrapper"
      ["type"]=>
      string(2) "->"
    }
    [2]=>
    array(5) {
      ["file"]=>
      string(35) "/var/www/otouczelnie/test/index.php"
      ["line"]=>
      int(265)
      ["function"]=>
      string(11) "handleError"
      ["class"]=>
      string(12) "ErrorManager"
      ["type"]=>
      string(2) "::"
    }
    [3]=>
    array(1) {
      ["function"]=>
      string(13) "fatal_handler"
    }
  }
  ["previous":"Exception":private]=>
  NULL
  ["errorInfo"]=>
  array(3) {
    [0]=>
    string(5) "22001"
    [1]=>
    int(1406)
    [2]=>
    string(42) "Data too long for column 'errstr' at row 1"
  }
}

object(PDOStatementWrapper)#346 (2) {
  ["queryString"]=>
  string(650) "INSERT INTO `system_log`
                        (`errno`,
                        `errfile`,
                        `errstr`,
                        `errline`,
                        `additional_data`,
                        `occurance`,
                        `trace`)
                        VALUES (
                        :ERRNO,
                        :ERRFILE,
                        :ERRSTR,
                        :ERRLINE,
                        :ADDITIONAL,
                        1,
                        :TRACE) ON DUPLICATE KEY
                            UPDATE occurance = occurance+1, updated_at = NOW();"
  ["values_arr":"PDOStatementWrapper":private]=>
  array(6) {
    [":ERRNO"]=>
    int(1)
    [":ERRFILE"]=>
    string(74) "/var/www/otouczelnie/test/system/database/drivers/mysqli/mysqli_driver.php"
    [":ERRSTR"]=>
    string(1318) "Uncaught mysqli_sql_exception: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near ') AND (u.idMiasto = 2 OR um.id_miasto = 2) 
            GROUP BY k.nazwa 
 ...' at line 35 in /var/www/otouczelnie/test/system/database/drivers/mysqli/mysqli_driver.php:179
Stack trace:
#0 /var/www/otouczelnie/test/system/database/drivers/mysqli/mysqli_driver.php(179): mysqli_query()
#1 /var/www/otouczelnie/test/system/database/DB_driver.php(413): CI_DB_mysqli_driver->_execute()
#2 /var/www/otouczelnie/test/system/database/DB_driver.php(272): CI_DB_driver->simple_query()
#3 /var/www/otouczelnie/test/application/modules/artykul/models/artykul_model.php(7417): CI_DB_driver->query()
#4 /var/www/otouczelnie/test/application/modules/miasto_dzial/controllers/miasto_dzial.php(1112): artykul_model->kierunkiStudiowNaMiescie()
#5 /var/www/otouczelnie/test/application/modules/miasto_dzial/controllers/miasto_dzial.php(556): Miasto_dzial->_miasto_dzial_studia()
#6 /var/www/otouczelnie/test/application/modules/artykul/controllers/artykul.php(3521): Miasto_dzial->miasto_dzial()
#7 /var/www/otouczelnie/test/system/core/CodeIgniter.php(359): artykul->miasto_dzial()
#8 /var/www/otouczelnie/test/index.php(238): require_once('...')
#9 {main}
  thrown"
    [":ERRLINE"]=>
    int(179)
    [":ADDITIONAL"]=>
    NULL
    [":TRACE"]=>
    string(153) "Array
(
    [0] => Array
        (
            [function] => fatal_handler
            [args] => Array
                (
                )

        )

)
"
  }
}

string(650) "INSERT INTO `system_log`
                        (`errno`,
                        `errfile`,
                        `errstr`,
                        `errline`,
                        `additional_data`,
                        `occurance`,
                        `trace`)
                        VALUES (
                        :ERRNO,
                        :ERRFILE,
                        :ERRSTR,
                        :ERRLINE,
                        :ADDITIONAL,
                        1,
                        :TRACE) ON DUPLICATE KEY
                            UPDATE occurance = occurance+1, updated_at = NOW();"