Phorum Database Error

Sorry, a Phorum database error occurred.
Please try again later!

Error:

Table './pmieszphorum/phorum_users' is marked as crashed and should be repaired (145): SELECT * FROM phorum_users WHERE user_id IN (17469)

Backtrace:

Function phorum_database_error called at
{path to Phorum}/include/db/mysql/mysqli.php:171
----
Function phorum_db_interact called at
{path to Phorum}/include/db/mysql.php:3181
----
Function phorum_db_user_get called at
{path to Phorum}/include/api/user.php:865
----
Function phorum_api_user_get called at
{path to Phorum}/mods/user_avatar/user_avatar.php:69
----
Function mod_user_avatar_read called
----
Function call_user_func_array called at
{path to Phorum}/common.php:993
----
Function phorum_hook called at
{path to Phorum}/feed.php:83
----