TYPO3 Core

After a upgrade from TYPO3 4.1 to 6.2 I run into this exception, if I try to open the backend. A clear error message should have been given instead. Nothing has been done in the Install Tool.

Uncaught TYPO3 Exception
#1270853884: TYPO3 Fatal Error: The current username, password or host was not accepted when the connection to the database was attempted to be established! (More information)

RuntimeException thrown in file
/home/path/public_html/typo3_src-master/typo3/sysext/core/Classes/Database/DatabaseConnection.php in line 1563.

10 TYPO3\CMS\Core\Database\DatabaseConnection::connectDB()

/home/path/public_html/typo3_src-master/typo3/sysext/core/Classes/Database/DatabaseConnection.php:

00789:  public function fullQuoteStr($str, $table, $allowNull = FALSE) {
00790:   if (!$this->isConnected) {

00791:    $this->connectDB();

00792:   }
00793:   if ($allowNull && $str === NULL) {

9 TYPO3\CMS\Core\Database\DatabaseConnection::fullQuoteStr("0506393400dcb27f27e99fe7738e57cc", "be_sessions,be_users")

/home/path/public_html/typo3_src-master/typo3/sysext/core/Classes/Database/PreparedStatement.php:

00452:      break;
00453:     case self::PARAM_STR:

00454:      $value = $GLOBALS['TYPO3_DB']->fullQuoteStr($typeValue['value'], $this->table);

00455:      break;
00456:     case self::PARAM_BOOL:

8 TYPO3\CMS\Core\Database\PreparedStatement::replaceValuesInQuery("SELECT * FROM be_sessions,be_users WHERE be_sessio…be_users.endtime=0 OR be_users.endtime>1384940911)", array, array)

/home/path/public_html/typo3_src-master/typo3/sysext/core/Classes/Database/PreparedStatement.php:

00284:    }
00285:   }

00286:   $this->replaceValuesInQuery($query, $precompiledQueryParts, $parameterValues);

00287:   if (count($precompiledQueryParts) > 0) {
00288:    $query = implode('', $precompiledQueryParts['queryParts']);

7 TYPO3\CMS\Core\Database\PreparedStatement::execute()

/home/path/public_html/typo3_src-master/typo3/sysext/core/Classes/Authentication/AbstractUserAuthentication.php:

00899:   $user = FALSE;
00900:   if ($statement) {

00901:    $statement->execute();

00902:    $user = $statement->fetch();
00903:    $statement->free();

6 TYPO3\CMS\Core\Authentication\AbstractUserAuthentication::fetchUserSession(boolean)

/home/path/public_html/typo3_src-master/typo3/sysext/core/Classes/Authentication/AbstractUserAuthentication.php:

00672:   }
00673:   // Re-read user session

00674:   $authInfo['userSession'] = $this->fetchUserSession($skipSessionUpdate);

00675:   $haveSession = is_array($authInfo['userSession']) ? TRUE : FALSE;
00676:   if ($this->writeDevLog) {

5 TYPO3\CMS\Core\Authentication\AbstractUserAuthentication::checkAuthentication()

/home/path/public_html/typo3_src-master/typo3/sysext/core/Classes/Authentication/AbstractUserAuthentication.php:

00441:   // Check to see if anyone has submitted login-information and if so register
00442:   // the user with the session. $this->user[uid] may be used to write log...

00443:   $this->checkAuthentication();

00444:   // Make certain that NO user is set initially. ->check_authentication may
00445:   // have set a session-record which will provide us with a user record in the next section:

4 TYPO3\CMS\Core\Authentication\AbstractUserAuthentication::start()

/home/path/public_html/typo3_src-master/typo3/sysext/core/Classes/Authentication/BackendUserAuthentication.php:

00353:    $this->security_level = 'superchallenged';
00354:   }

00355:   parent::start();

00356:  }
00357: 

3 TYPO3\CMS\Core\Authentication\BackendUserAuthentication::start()

/home/path/public_html/typo3_src-master/typo3/sysext/core/Classes/Core/Bootstrap.php:

01024:   // might trigger code which relies on it. See: #45625
01025:   $GLOBALS['BE_USER'] = $backendUser;

01026:   $backendUser->start();

01027:   return $this;
01028:  }

2 TYPO3\CMS\Core\Core\Bootstrap::initializeBackendUser()

/home/path/public_html/typo3_src-master/typo3/init.php:

00069:  ->loadExtensionTables(TRUE)
00070:  ->initializeSpriteManager()

00071:  ->initializeBackendUser()

00072:  ->initializeBackendAuthentication()
00073:  ->initializeBackendUserMounts()

1 require("/home/path/public_html/typo3_src-master/typo3/init.php")

/home/path/public_html/typo3_src-master/typo3/index.php:

00032:  */
00033: define('TYPO3_PROCEED_IF_NO_USER', 1);

00034: require __DIR__ . '/init.php';

00035: 
00036: $loginController = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance('TYPO3\\CMS\\Backend\\Controller\\LoginController');