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<b>Fatal error</b>:  Uncaught Exception: Error: Subquery returns more than 1 row&lt;br /&gt;Error No: 1242&lt;br /&gt;SELECT pro.*, pov.*, ovd.*, ov.* FROM oc_product_rel_option pro 
                LEFT JOIN oc_product_option_value pov ON (pov.product_id = pro.related_id)
                LEFT JOIN oc_option_value_description ovd ON (ovd.option_value_id = pov.option_value_id)
                LEFT JOIN oc_option_value ov ON (ov.option_value_id = ovd.option_value_id)
                LEFT JOIN oc_product p ON (p.product_id = pov.product_id)
                WHERE pro.product_id = '20666' 
                AND p.status = '1'
                AND pov.option_id = '14' 
                AND pov.option_value_id &lt;&gt; (SELECT option_value_id FROM oc_product_option_value WHERE product_id = '20666' AND option_id = '14') in /var/www/signaluacomua/data/www/signalua.com.ua/system/library/db/mysqli.php:40
Stack trace:
#0 /var/www/signaluacomua/data/www/signalua.com.ua/system/storage/modification/system/library/db.php(237): DB\MySQLi-&gt;query('SELECT pro.*, p...')
# in <b>/var/www/signaluacomua/data/www/signalua.com.ua/system/library/db/mysqli.php</b> on line <b>40</b><br />