jtablesession::Store Failed
DB function failed with error number 144
Table './stickers_sampath/jos_session' is marked as crashed and last (automatic?) repair failed SQL=INSERT INTO `jos_session` ( `session_id`,`time`,`username`,`gid`,`guest`,`client_id` ) VALUES ( 'bd07acad111f2dab3fad51ea2de8f089','1544841618','','0','1','0' )
Warning: debug_backtrace(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/stickerssampath/public_html/libraries/joomla/error/exception.php on line 117

Fatal error: Allowed memory size of 536870912 bytes exhausted (tried to allocate 72 bytes) in /home/stickerssampath/public_html/libraries/joomla/error/exception.php on line 117