jos-Error: Application Instantiation Error

JFactory :: getApplication() @ /home/unmondec/www/lachevrerit-V2/index.php:27
JApplication :: getInstance() @ /home/unmondec/www/lachevrerit-V2/libraries/joomla/factory.php:102
JSite -> __construct() @ /home/unmondec/www/lachevrerit-V2/libraries/joomla/application/application.php:208
JApplication -> __construct() @ /home/unmondec/www/lachevrerit-V2/includes/application.php:47
JApplication -> _createSession() @ /home/unmondec/www/lachevrerit-V2/libraries/joomla/application/application.php:173
JApplication -> checkSession() @ /home/unmondec/www/lachevrerit-V2/libraries/joomla/application/application.php:1070
JDatabaseMySQL -> query() @ /home/unmondec/www/lachevrerit-V2/libraries/joomla/application/application.php:1127
JError :: raiseError() @ /home/unmondec/www/lachevrerit-V2/libraries/joomla/database/database/mysql.php:542
JError :: raise() @ /home/unmondec/www/lachevrerit-V2/libraries/joomla/error/error.php:251
JError :: throwError() @ /home/unmondec/www/lachevrerit-V2/libraries/joomla/error/error.php:176
call_user_func_array() @ /home/unmondec/www/lachevrerit-V2/libraries/joomla/error/error.php:214
JError :: handleMessage()
JFactory :: getApplication() @ /home/unmondec/www/lachevrerit-V2/libraries/joomla/error/error.php:705
JError :: raiseError() @ /home/unmondec/www/lachevrerit-V2/libraries/joomla/factory.php:99
JError :: raise() @ /home/unmondec/www/lachevrerit-V2/libraries/joomla/error/error.php:251
jos-Error: JDatabaseMySQL::query: 1142 - UPDATE command denied to user 'unmondecnew'@'10.0.65.28' for table 'lcn_session' SQL=UPDATE `lcn_session` SET `data` = '__default|a:6:{s:15:\"session.counter\";i:1;s:19:\"session.timer.start\";i:1524474354;s:18:\"session.timer.last\";i:1524474354;s:17:\"session.timer.now\";i:1524474354;s:24:\"session.client.forwarded\";s:13:\"54.81.117.119\";s:22:\"session.client.browser\";s:39:\"CCBot/2.0 (http://commoncrawl.org/faq/)\";}' , `time` = '1524474354' WHERE `session_id` = 'a352fd89d1288772d76f27c2e173c2f7'

JSession -> __destruct()
JSession -> close() @ /home/unmondec/www/lachevrerit-V2/libraries/joomla/session/session.php:134
session_write_close() @ /home/unmondec/www/lachevrerit-V2/libraries/joomla/session/session.php:672
JSessionStorageDatabase -> write()
JDatabaseMySQL -> query() @ /home/unmondec/www/lachevrerit-V2/libraries/joomla/session/storage/database.php:111
JError :: raiseError() @ /home/unmondec/www/lachevrerit-V2/libraries/joomla/database/database/mysql.php:542
JError :: raise() @ /home/unmondec/www/lachevrerit-V2/libraries/joomla/error/error.php:251