MySQL error in file: /engine/modules/topnews.php at line 37

Error Number: 1

The Error returned was:
Can't create/write to file '/run/#sql_51a9_0.MYI' (Errcode: 13)

SQL query:

SELECT p.id, p.date, p.short_story, p.xfields, p.title, p.category, p.alt_name FROM montoday_post p LEFT JOIN montoday_post_extras e ON (p.id=e.news_id) WHERE p.approve=1 AND p.date >= '2020-09-26 12:38:21' - INTERVAL 1 MONTH AND p.date < '2020-09-26 12:38:21' ORDER BY rating DESC, comm_num DESC, news_read DESC, date DESC LIMIT 0,10