So I attempted to upgrade the forum and I am getting the following error:

Warning: Error while sending STMT_PREPARE packet. PID=38229 in /home/u262969555/public_html/community/sys/vendor/illuminate/database/Illuminate/Database/Connection.php on line 357

Fatal error: Uncaught Illuminate\Database\QueryException: SQLSTATE[HY000]: General error: 2006 MySQL server has gone away (SQL: update codo_config set option_value = 4.6 where option_name = version) in /home/u262969555/public_html/community/sys/vendor/illuminate/database/Illuminate/Database/Connection.php:555 Stack trace: #0 /home/u262969555/public_html/community/sys/vendor/illuminate/database/Illuminate/Database/Connection.php(362): Illuminate\Database\Connection->run('update codo_co...', Array, Object(Closure)) #1 /home/u262969555/public_html/community/sys/vendor/illuminate/database/Illuminate/Database/Connection.php(307): Illuminate\Database\Connection->affectingStatement('updatecodo_co...', Array) #2 /home/u262969555/public_html/community/sys/vendor/illuminate/database/Illuminate/Database/Query/Builder.php(1871): Illuminate\Database\Connection->update('update `codo_co...', Array) #3 /home/u262969555/public_html/community/install/upgrade/4.6.php(4): Illuminate\Database\Query\Builder->update(Array) #4 /home/u26 in /home/u262969555/public_html/community/sys/vendor/illuminate/database/Illuminate/Database/Connection.php on line 555

Fatal error: Uncaught PDOException: SQLSTATE[HY000]: General error: 2006 MySQL server has gone away in /home/u262969555/publichtml/community/sys/CODOF/Session/Session.php:58 Stack trace: #0 /home/u262969555/public_html/community/sys/CODOF/Session/Session.php(5: PDO->prepare('SELECT session...' #1 /home/u262969555/public_html/community/sys/CODOF/Session/Session.php(77): CODOF\Session\Session->read('26c7f1e4a4d06da...' #2 [internal function]: CODOF\Session\Session->write('26c7f1e4a4d06da...', '5c327ee25f54f_c...' #3 [internal function]: session_write_close() #4 {main} thrown in /home/u262969555/public_html/community/sys/CODOF/Session/Session.php on line 58

Hi,

It usually happens due to packet limits set in mysql configuration.
Can you try upgrading again ? Did you try doing a fresh install ? (Make sure to backup your database)