Title: Error log PHP Warning
Last modified: March 15, 2022

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# Error log PHP Warning

 *  Resolved [izzyweb](https://wordpress.org/support/users/izzyweb/)
 * (@izzyweb)
 * [4 years, 2 months ago](https://wordpress.org/support/topic/error-log-php-warning-2/)
 * Hi
    I get these two errors in the logs: PHP Warning: fsockopen(): unable to connect
   to node3.quic.cloud:443 (No route to host) in /home/wp/public_html/wp-content/
   plugins/litespeed-cache/src/utility.cls.php on line 182 My CDN settings is OFF
 * `[14-Mar-2022 15:29:23 UTC] WordPress errore sul database Illegal mix of collations(
   utf8mb4_unicode_ci,IMPLICIT) and (utf8mb4_unicode_520_ci,IMPLICIT) for operation'
   =' per la query SELECT a.id, a.url FROM`wp_litespeed_crawler_blacklist`a LEFT
   JOIN`wp_litespeed_crawler` b ON b.url=a.url WHERE b.id IN ( 202 ) fatta da do_action_ref_array(‘
   litespeed_task_crawler’), WP_Hook->do_action, WP_Hook->apply_filters, LiteSpeed\
   Crawler::start, LiteSpeed\Crawler->_crawl_data, LiteSpeed\Crawler->_engine_start,
   LiteSpeed\Crawler->_do_running, LiteSpeed\Crawler_Map->save_map_status
    [14-Mar-
   2022 15:29:23 UTC] WordPress errore sul database Illegal mix of collations (utf8mb4_unicode_ci,
   IMPLICIT) and (utf8mb4_unicode_520_ci,IMPLICIT) for operation ‘=’ per la query
   UPDATE `wp_litespeed_crawler_blacklist` a LEFT JOIN `wp_litespeed_crawler` b 
   ON b.url = a.url SET a.reason = CONCAT( SUBSTRING_INDEX( a.reason, ‘,’, 0 ), ‘
   0,’, SUBSTRING_INDEX( a.reason, ‘,’, -3 ) ) WHERE b.id IN (202) fatta da do_action_ref_array(‘
   litespeed_task_crawler’), WP_Hook->do_action, WP_Hook->apply_filters, LiteSpeed\
   Crawler::start, LiteSpeed\Crawler->_crawl_data, LiteSpeed\Crawler->_engine_start,
   LiteSpeed\Crawler->_do_running, LiteSpeed\Crawler_Map->save_map_status
 * How can i solve?

Viewing 5 replies - 1 through 5 (of 5 total)

 *  Plugin Support [qtwrk](https://wordpress.org/support/users/qtwrk/)
 * (@qtwrk)
 * [4 years, 2 months ago](https://wordpress.org/support/topic/error-log-php-warning-2/#post-15464733)
 * Hi,
 * for first case, please go to General , and click this icon as my screenshot to
   refresh the node
 * ![](https://i0.wp.com/www.litespeedshare.net/2022/03/acb62b-ScreenShot2022-03-
   15_22.18.12.png?ssl=1)
 * for second , please try go to phpmyadmin -> wordpress database -> run this query,
   see what it says
 * [https://www.litespeedshare.net/s/tajsz-gk](https://www.litespeedshare.net/s/tajsz-gk)
 * best regards,
 *  Thread Starter [izzyweb](https://wordpress.org/support/users/izzyweb/)
 * (@izzyweb)
 * [4 years, 2 months ago](https://wordpress.org/support/topic/error-log-php-warning-2/#post-15467721)
 * Hi
    this is the answer of MySql: MySQL ha restituito un insieme vuoto (i.e. zero
   righe). (La query ha impiegato 0.0277 secondi.)
 * MySQL returned an empty set
    -  This reply was modified 4 years, 2 months ago by [izzyweb](https://wordpress.org/support/users/izzyweb/).
 *  Plugin Support [qtwrk](https://wordpress.org/support/users/qtwrk/)
 * (@qtwrk)
 * [4 years, 2 months ago](https://wordpress.org/support/topic/error-log-php-warning-2/#post-15468598)
 * did you see the table `wp_litespeed_crawler_blacklist` table creates up ?
 *  Thread Starter [izzyweb](https://wordpress.org/support/users/izzyweb/)
 * (@izzyweb)
 * [4 years ago](https://wordpress.org/support/topic/error-log-php-warning-2/#post-15687842)
 * When the crawel starts I always get the same error.
    The blacklist table has 
   been created
 *  Thread Starter [izzyweb](https://wordpress.org/support/users/izzyweb/)
 * (@izzyweb)
 * [4 years ago](https://wordpress.org/support/topic/error-log-php-warning-2/#post-15687848)
 * [https://tinyurl.com/2ms3erq6](https://tinyurl.com/2ms3erq6)

Viewing 5 replies - 1 through 5 (of 5 total)

The topic ‘Error log PHP Warning’ is closed to new replies.

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 * 5 replies
 * 2 participants
 * Last reply from: [izzyweb](https://wordpress.org/support/users/izzyweb/)
 * Last activity: [4 years ago](https://wordpress.org/support/topic/error-log-php-warning-2/#post-15687848)
 * Status: resolved