Phorum Database Error

Sorry, a Phorum database error occurred.
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Error:

MySQL server has gone away (2006): INSERT INTO phorum_event_logging (message, details, loglevel, source, category, datestamp, ip, vroot) VALUES ('Database error: Sort aborted (1028): SELECT *\n FROM phorum_messages\n WHERE forum_id = 4 AND\n thread = 4329741\n AND status =2\n ORDER BY message_id LIMIT 50,50', 'Message:\n\nDatabase error: Sort aborted (1028): SELECT *\n FROM phorum_messages\n WHERE forum_id = 4 AND\n thread = 4329741\n AND status =2\n ORDER BY message_id LIMIT 50,50\n\n\nBack trace:\n\nFunction phorum_database_error called at\n{path to Phorum}/include/db/mysql/mysqli.php:212\n----\nFunction phorum_db_interact called at\n{path to Phorum}/include/db/mysql.php:1433\n----\nFunction phorum_db_get_messages called at\n{path to Phorum}/read.php:363\n----\n', 4, 'read', 0, 1484571362, '41.188.35.104', 0)

Backtrace:

Function phorum_database_error called at
{path to Phorum}/include/db/mysql/mysqli.php:212
----
Function phorum_db_interact called at
{path to Phorum}/mods/event_logging/db.php:249
----
Function event_logging_writelog called at
{path to Phorum}/mods/event_logging/event_logging.php:562
----
Function phorum_mod_event_logging_database_error called
----
Function call_user_func_array called at
{path to Phorum}/common.php:1916
----
Function phorum_hook called at
{path to Phorum}/common.php:2275
----
Function phorum_database_error called at
{path to Phorum}/include/db/mysql/mysqli.php:212
----
Function phorum_db_interact called at
{path to Phorum}/include/db/mysql.php:1433
----
Function phorum_db_get_messages called at
{path to Phorum}/read.php:363
----