MySQL error in file: /engine/modules/calendar.php at line 167

Error Number: 145

The Error returned was:
Table './ural@002dtrans@002dprok/dle_post' is marked as crashed and should be repaired

SQL query:

SELECT DISTINCT DAYOFMONTH(date) as day FROM dle_post WHERE date >= '2015-08-01' AND date < '2015-08-01' + INTERVAL 1 MONTH