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Please help me to fix it.

Getting this message :

Question2Answer query failed:

SELECT qa_categories.categoryid, qa_categories.parentid, qa_categories.title AS title, qa_categories.tags AS tags, qa_categories.qcount, qa_categories.position, COUNT(child.categoryid) AS childcount, qa_categories.content AS content, qa_categories.backpath AS backpath FROM qa_categories JOIN (SELECT NULL AS parentkey UNION SELECT grandparent.parentid FROM qa_categories JOIN qa_categories AS parent ON qa_categories.parentid=parent.categoryid JOIN qa_categories AS grandparent ON parent.parentid=grandparent.categoryid WHERE qa_categories.categoryid=(SELECT categoryid FROM qa_posts WHERE postid=371) UNION SELECT parent.parentid FROM qa_categories JOIN qa_categories AS parent ON qa_categories.parentid=parent.categoryid WHERE qa_categories.categoryid=(SELECT categoryid FROM qa_posts WHERE postid=371) UNION SELECT parentid FROM qa_categories WHERE categoryid=(SELECT categoryid FROM qa_posts WHERE postid=371) UNION SELECT categoryid FROM qa_categories WHERE categoryid=(SELECT categoryid FROM qa_posts WHERE postid=371)) y ON qa_categories.parentid<=>parentkey LEFT JOIN qa_categories AS child ON child.parentid=qa_categories.categoryid GROUP BY qa_categories.categoryid ORDER BY qa_categories.position

Error 5: Out of memory (Needed 2097396 bytes)

Q2A version: 1.5

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