کمک برای متوجه شدن ارورلاگ

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[11-Apr-2017 12:29:52 UTC] PHP Fatal error:  Out of memory (allocated 6291456) (tried to allocate 32768 bytes) in /home/mysite/public_html/wp-includes/general-template.php on line 3779
[11-Apr-2017 12:29:52 UTC] PHP Warning:  PHP Startup: Unable to load dynamic library '/opt/alt/php70/usr/lib64/php/modules/mysqli.so' - libmysqlclient.so.18: failed to map segment from shared object: Cannot allocate memory in Unknown on line 0
[11-Apr-2017 12:29:52 UTC] PHP Fatal error:  Uncaught Error: Call to undefined function mysql_connect() in /home/mysite/public_html/wp-includes/wp-db.php:1570
Stack trace:
#0 /home/mysite/public_html/wp-includes/wp-db.php(658): wpdb->db_connect()
#1 /home/mysite/public_html/wp-includes/load.php(404): wpdb->__construct('mysite_usnewh...', 'qEGOzH,}+7t}Wc[...', 'mysite_newhs', 'localhost')
#2 /home/mysite/public_html/wp-settings.php(107): require_wp_db()
#3 /home/mysite/wp-config.php(78): require_once('/home/mysite/...')
#4 /home/mysite/public_html/wp-load.php(42): require_once('/home/mysite/...')
#5 /home/mysite/public_html/wp-blog-header.php(13): require_once('/home/mysite/...')
#6 /home/mysite/public_html/index.php(17): require('/home/mysite/...')
#7 {main}
  thrown in /home/mysite/public_html/wp-includes/wp-db.php on line 1570