object(mysqli_sql_exception)#29 (8) {
  ["message":protected]=>
  string(18) "Connection refused"
  ["string":"Exception":private]=>
  string(0) ""
  ["code":protected]=>
  int(2002)
  ["file":protected]=>
  string(71) "/usr/www/users/smlanat/_system/classes/general/model/model_database.php"
  ["line":protected]=>
  int(202)
  ["trace":"Exception":private]=>
  array(7) {
    [0]=>
    array(5) {
      ["file"]=>
      string(71) "/usr/www/users/smlanat/_system/classes/general/model/model_database.php"
      ["line"]=>
      int(202)
      ["function"]=>
      string(11) "__construct"
      ["class"]=>
      string(6) "mysqli"
      ["type"]=>
      string(2) "->"
    }
    [1]=>
    array(5) {
      ["file"]=>
      string(71) "/usr/www/users/smlanat/_system/classes/general/model/model_database.php"
      ["line"]=>
      int(620)
      ["function"]=>
      string(13) "getConnection"
      ["class"]=>
      string(15) "NQDatabaseModel"
      ["type"]=>
      string(2) "->"
    }
    [2]=>
    array(5) {
      ["file"]=>
      string(71) "/usr/www/users/smlanat/_system/classes/general/model/model_database.php"
      ["line"]=>
      int(339)
      ["function"]=>
      string(19) "getSelectResultsFor"
      ["class"]=>
      string(15) "NQDatabaseModel"
      ["type"]=>
      string(2) "->"
    }
    [3]=>
    array(5) {
      ["file"]=>
      string(85) "/usr/www/users/smlanat/_system/classes/general/model/model_database_multiple_item.php"
      ["line"]=>
      int(1211)
      ["function"]=>
      string(13) "getResultsFor"
      ["class"]=>
      string(15) "NQDatabaseModel"
      ["type"]=>
      string(2) "->"
    }
    [4]=>
    array(5) {
      ["file"]=>
      string(85) "/usr/www/users/smlanat/_system/classes/general/model/model_database_multiple_item.php"
      ["line"]=>
      int(1166)
      ["function"]=>
      string(16) "getAllObjectsFor"
      ["class"]=>
      string(37) "NQDatabaseMultiplePrimaryKeyItemModel"
      ["type"]=>
      string(2) "::"
    }
    [5]=>
    array(5) {
      ["file"]=>
      string(82) "/usr/www/users/smlanat/_system/classes/training/controller/controller_frontend.php"
      ["line"]=>
      int(72)
      ["function"]=>
      string(13) "getAllObjects"
      ["class"]=>
      string(37) "NQDatabaseMultiplePrimaryKeyItemModel"
      ["type"]=>
      string(2) "::"
    }
    [6]=>
    array(5) {
      ["file"]=>
      string(72) "/usr/www/users/smlanat/com_allskills-training_2022/seminar-anmeldung.php"
      ["line"]=>
      int(22)
      ["function"]=>
      string(11) "__construct"
      ["class"]=>
      string(31) "NQWebTrainingFrontendController"
      ["type"]=>
      string(2) "->"
    }
  }
  ["previous":"Exception":private]=>
  NULL
  ["sqlstate":protected]=>
  string(5) "HY000"
}
<br />
<b>Warning</b>:  foreach() argument must be of type array|object, null given in <b>/usr/www/users/smlanat/_system/classes/training/controller/controller_frontend.php</b> on line <b>72</b><br />
<br />
<b>Fatal error</b>:  Uncaught mysqli_sql_exception: Connection refused in /usr/www/users/smlanat/_system/classes/general/model/model_database.php:202
Stack trace:
#0 /usr/www/users/smlanat/_system/classes/general/model/model_database.php(202): mysqli-&gt;__construct()
#1 /usr/www/users/smlanat/_system/classes/general/model/model_database.php(620): NQDatabaseModel-&gt;getConnection()
#2 /usr/www/users/smlanat/_system/classes/general/model/model_database_multiple_item.php(991): NQDatabaseModel-&gt;getSelectResultsFor()
#3 /usr/www/users/smlanat/_system/classes/training/model/model_training.php(432): NQDatabaseMultiplePrimaryKeyItemModel::getAllColumnDataArray()
#4 /usr/www/users/smlanat/_system/classes/training/model/model_training.php(290): NQWebTrainingModel::getTrainingShortModelsForTypeWithIdsOf()
#5 /usr/www/users/smlanat/_system/classes/training/model/model_training.php(277): NQWebTrainingModel::getTrainingShortModelsForUrlsIncluding()
#6 /usr/www/users/smlanat/_system/classes/training/controller/controller_frontend.php(2121): NQWebTrainingModel::getTrainingShortModelsForUrlIncluding()
#7 /usr/www/users/smlanat/com_allskills-training_2022/seminar-anmeldung.php(35): NQWebTrainingFrontendController-&gt;getShortTrainingForUrl()
#8 {main}
  thrown in <b>/usr/www/users/smlanat/_system/classes/general/model/model_database.php</b> on line <b>202</b><br />