This is the most recent stuff from the cpanel error log.
Maybe there is a clue for someone who knows how to interpret this stuff.
#6 /home/jame in /home/jameshou/public_html/app/Tygh/Database/Connection.php on line 863
#5 /home/jameshou/public_html/app/Tygh/Database/Connection.php(548): Tygh\Database\Connection->checkTableFields(Array, 'sessions')
#4 /home/jameshou/public_html/app/Tygh/Database/Connection.php(690): Tygh\Database\Connection->getTableFields('sessions')
#3 /home/jameshou/public_html/app/Tygh/Database/Connection.php(660): Tygh\Database\Connection->getColumn('SHOW COLUMNS FR...')
#2 /home/jameshou/public_html/app/Tygh/Database/Connection.php(327): call_user_func_array(Array, Array)
#0 /home/jameshou/public_html/app/Tygh/Database/Connection.php(458): Tygh\Database\Connection->error(false, 'SHOW COLUMNS FR...')
2017-01-13 08:45:07.080 [NOTICE] [203.214.79.100:51330] [STDERR] PHP Fatal error: Uncaught exception 'Tygh\Exceptions\DatabaseException' with message 'Disk full (/tmp/#sql_dea97_0.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
(1021)SHOW COLUMNS FROM cscart_sessions
' in /home/jameshou/public_html/app/Tygh/Database/Connection.php:863
2017-01-13 08:45:07.079 [NOTICE] [203.214.79.100:51330] [STDERR] PHP Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /home/jameshou/public_html/app/Tygh/Development.php:113) in /home/jameshou/public_html/app/Tygh/Web/Session.php on line 334
2017-01-13 08:45:07.079 [NOTICE] [203.214.79.100:51330] [STDERR] PHP Warning: session_start(): Cannot send session cookie - headers already sent by (output started at /home/jameshou/public_html/app/Tygh/Development.php:113) in /home/jameshou/public_html/app/Tygh/Web/Session.php on line 334
#6 /home/jame in /home/jameshou/public_html/app/Tygh/Database/Connection.php on line 863
#5 /home/jameshou/public_html/app/Tygh/Database/Connection.php(548): Tygh\Database\Connection->checkTableFields(Array, 'sessions')
#4 /home/jameshou/public_html/app/Tygh/Database/Connection.php(690): Tygh\Database\Connection->getTableFields('sessions')
#3 /home/jameshou/public_html/app/Tygh/Database/Connection.php(660): Tygh\Database\Connection->getColumn('SHOW COLUMNS FR...')
#2 /home/jameshou/public_html/app/Tygh/Database/Connection.php(327): call_user_func_array(Array, Array)
#0 /home/jameshou/public_html/app/Tygh/Database/Connection.php(458): Tygh\Database\Connection->error(false, 'SHOW COLUMNS FR...')
2017-01-13 08:45:06.568 [NOTICE] [203.214.79.100:51329] [STDERR] PHP Fatal error: Uncaught exception 'Tygh\Exceptions\DatabaseException' with message 'Disk full (/tmp/#sql_dea97_0.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
(1021)SHOW COLUMNS FROM cscart_sessions
' in /home/jameshou/public_html/app/Tygh/Database/Connection.php:863
2017-01-13 08:45:06.566 [NOTICE] [203.214.79.100:51329] [STDERR] PHP Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /home/jameshou/public_html/app/functions/fn.control.php:629) in /home/jameshou/public_html/app/Tygh/Web/Session.php on line 334
2017-01-13 08:45:06.565 [NOTICE] [203.214.79.100:51329] [STDERR] PHP Warning: session_start(): Cannot send session cookie - headers already sent by (output started at /home/jameshou/public_html/app/functions/fn.control.php:629) in /home/jameshou/public_html/app/Tygh/Web/Session.php on line 334
#6 /home/jame in /home/jameshou/public_html/app/Tygh/Database/Connection.php on line 863
#5 /home/jameshou/public_html/app/Tygh/Database/Connection.php(548): Tygh\Database\Connection->checkTableFields(Array, 'sessions')
#4 /home/jameshou/public_html/app/Tygh/Database/Connection.php(690): Tygh\Database\Connection->getTableFields('sessions')