search within a category is not working

Hi

I have been using this plugin for a while now. Today I received a query from a user saying they are not able to search through a category.

When this plugin is enabled, global search (means search through out the site) works fine, but search within a category doesnt work. But when I tried disabling this plugin, the search function works fine for category too. After I checked the log file, I could see some errors.

FYI: Earlier the search function from Relevanssi was working great.

SELECT COUNT(id)
FROM wp_icl_string_positions
WHERE string_id = 8640 AND kind = 1
fra require(‘wp-blog-header.php’), wp, WP->main, WP->query_posts, WP_Query->query, WP_Query->get_posts, apply_filters_ref_array, WP_Hook->apply_filters, relevanssi_query, relevanssi_do_query, relevanssi_search
[01-May-2017 12:18:42 UTC] PHP Notice: Undefined property: stdClass::$type in /home/u1cki7c/www/wp-content/plugins/relevanssi/lib/search.php on line 653
[01-May-2017 12:18:42 UTC] PHP Notice: Undefined property: stdClass::$type in /home/u1cki7c/www/wp-content/plugins/relevanssi/lib/search.php on line 656
[01-May-2017 12:18:42 UTC] PHP Notice: Undefined property: stdClass::$type in /home/u1cki7c/www/wp-content/plugins/relevanssi/lib/search.php on line 657
[01-May-2017 12:18:42 UTC] PHP Notice: Undefined property: stdClass::$item in /home/u1cki7c/www/wp-content/plugins/relevanssi/lib/search.php on line 657
[01-May-2017 12:18:42 UTC] PHP Notice: Undefined property: stdClass::$title in /home/u1cki7c/www/wp-content/plugins/relevanssi/lib/search.php on line 679
[01-May-2017 12:18:42 UTC] PHP Notice: Undefined property: stdClass::$content in /home/u1cki7c/www/wp-content/plugins/relevanssi/lib/search.php on line 680
[01-May-2017 12:18:42 UTC] PHP Notice: Undefined property: stdClass::$comment in /home/u1cki7c/www/wp-content/plugins/relevanssi/lib/search.php on line 681
[01-May-2017 12:18:42 UTC] PHP Notice: Undefined property: stdClass::$link in /home/u1cki7c/www/wp-content/plugins/relevanssi/lib/search.php on line 682
[01-May-2017 12:18:42 UTC] PHP Notice: Undefined property: stdClass::$author in /home/u1cki7c/www/wp-content/plugins/relevanssi/lib/search.php on line 683
[01-May-2017 12:18:42 UTC] PHP Notice: Undefined property: stdClass::$excerpt in /home/u1cki7c/www/wp-content/plugins/relevanssi/lib/search.php on line 684
[01-May-2017 12:18:42 UTC] PHP Notice: Undefined property: stdClass::$taxonomy_score in /home/u1cki7c/www/wp-content/plugins/relevanssi/lib/search.php on line 685
[01-May-2017 12:18:42 UTC] PHP Notice: Undefined property: stdClass::$customfield in /home/u1cki7c/www/wp-content/plugins/relevanssi/lib/search.php on line 686
[01-May-2017 12:18:42 UTC] PHP Notice: Undefined property: stdClass::$mysqlcolumn in /home/u1cki7c/www/wp-content/plugins/relevanssi/lib/search.php on line 687
[01-May-2017 12:18:42 UTC] PHP Notice: Undefined property: stdClass::$title in /home/u1cki7c/www/wp-content/plugins/relevanssi/lib/search.php on line 690
[01-May-2017 12:18:42 UTC] PHP Notice: Undefined property: stdClass::$content in /home/u1cki7c/www/wp-content/plugins/relevanssi/lib/search.php on line 691
[01-May-2017 12:18:42 UTC] PHP Notice: Undefined property: stdClass::$comment in /home/u1cki7c/www/wp-content/plugins/relevanssi/lib/search.php on line 692
[01-May-2017 12:18:42 UTC] PHP Notice: Undefined property: stdClass::$tag in /home/u1cki7c/www/wp-content/plugins/relevanssi/lib/search.php on line 693
[01-May-2017 12:18:42 UTC] PHP Notice: Undefined property: stdClass::$link in /home/u1cki7c/www/wp-content/plugins/relevanssi/lib/search.php on line 694
[01-May-2017 12:18:42 UTC] PHP Notice: Undefined property: stdClass::$author in /home/u1cki7c/www/wp-content/plugins/relevanssi/lib/search.php on line 695
[01-May-2017 12:18:42 UTC] PHP Notice: Undefined property: stdClass::$category in /home/u1cki7c/www/wp-content/plugins/relevanssi/lib/search.php on line 696
[01-May-2017 12:18:42 UTC] PHP Notice: Undefined property: stdClass::$excerpt in /home/u1cki7c/www/wp-content/plugins/relevanssi/lib/search.php on line 697
[01-May-2017 12:18:42 UTC] PHP Notice: Undefined property: stdClass::$taxonomy in /home/u1cki7c/www/wp-content/plugins/relevanssi/lib/search.php on line 698
[01-May-2017 12:18:42 UTC] PHP Notice: Undefined property: stdClass::$customfield in /home/u1cki7c/www/wp-content/plugins/relevanssi/lib/search.php on line 699
[01-May-2017 12:18:42 UTC] PHP Notice: Undefined property: stdClass::$mysqlcolumn in /home/u1cki7c/www/wp-content/plugins/relevanssi/lib/search.php on line 700
[01-May-2017 12:18:42 UTC] PHP Notice: Undefined property: stdClass::$content in /home/u1cki7c/www/wp-content/plugins/relevanssi/lib/search.php on line 710
[01-May-2017 12:18:42 UTC] PHP Notice: Undefined property: stdClass::$title in /home/u1cki7c/www/wp-content/plugins/relevanssi/lib/search.php on line 711
[01-May-2017 12:18:42 UTC] PHP Notice: Undefined property: stdClass::$link in /home/u1cki7c/www/wp-content/plugins/relevanssi/lib/search.php on line 712
[01-May-2017 12:18:42 UTC] PHP Notice: Undefined property: stdClass::$tag in /home/u1cki7c/www/wp-content/plugins/relevanssi/lib/search.php on line 713
[01-May-2017 12:18:42 UTC] PHP Notice: Undefined property: stdClass::$category in /home/u1cki7c/www/wp-content/plugins/relevanssi/lib/search.php on line 714
[01-May-2017 12:18:42 UTC] PHP Notice: Undefined property: stdClass::$taxonomy in /home/u1cki7c/www/wp-content/plugins/relevanssi/lib/search.php on line 715
[01-May-2017 12:18:42 UTC] PHP Notice: Undefined property: stdClass::$comment in /home/u1cki7c/www/wp-content/plugins/relevanssi/lib/search.php on line 716
[01-May-2017 12:18:42 UTC] WordPress-databasefejl You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘226,333,320,321,302,347,326,371)) AND ((relevanssi.doc IN (SELECT DISTINCT(posts’ at line 7 for foresp??rgslen
SELECT COUNT(id)
FROM wp_icl_string_positions
WHERE string_id = 8640 AND kind = 1
fra require(‘wp-blog-header.php’), wp, WP->main, WP->query_posts, WP_Query->query, WP_Query->get_posts, apply_filters_ref_array, WP_Hook->apply_filters, relevanssi_query, relevanssi_do_query, relevanssi_search
[01-May-2017 12:18:42 UTC] PHP Notice: Undefined property: stdClass::$doc in /home/u1cki7c/www/wp-content/plugins/relevanssi/lib/common.php on line 254

I am not sure what it means. Any help is appreciated. If you want any more details please let me know.

Thanks.
Parul.