Thread:Project:Support desk/Database Query Syntax Error

When I attempt to use the search feature on my wiki (www.gravestonewiki.com), I get the following message:

A database query syntax error has occurred. This may indicate a bug in the software. The last attempted database query was: (SQL query hidden) from within function "". Database returned error "144: Table './gra1028305302285/mw_searchindex' is marked as crashed and last (automatic?) repair failed (p50mysql41.secureserver.net)".

What should I do?