Phorum Database Error

Sorry, a Phorum database error occurred.
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Error:

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

Backtrace:

Function phorum_database_error called at
{path to Phorum}/include/db/mysql/mysqli.php:171
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Function phorum_db_interact called at
{path to Phorum}/include/db/mysql.php:3085
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Function phorum_db_user_count called at
{path to Phorum}/mods/forumstats/forumstats.php:92
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Function mod_forumstats_getstats called at
{path to Phorum}/mods/forumstats/forumstats.php:41
----
Function mod_forumstats called
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Function call_user_func called at
{path to Phorum}/common.php:995
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Function phorum_hook called at
{path to Phorum}/common.php:839
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Function phorum_output called at
{path to Phorum}/list.php:614
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