Error system/library/db/mysqli.php on line 18 20 57???

[myop]

Продолжайте получать эту ошибку снова и снова, строки 18, 20, а иногда и 57 в system/library/db/mysqli.php 

Любая помощь или предложения будут высоко ценится

2019-04-09 15:25:41 - PHP Warning:  mysqli::query(): Couldn't fetch mysqli in /home/xxx/public_html/system/library/db/mysqli.php on line 18
2019-04-09 15:25:41 - PHP Warning:  DB\MySQLi::query(): Couldn't fetch mysqli in /home/xxx/public_html/system/library/db/mysqli.php on line 20
2019-04-09 15:25:41 - PHP Warning:  mysqli::query(): Couldn't fetch mysqli in /home/xxx/public_html/system/library/db/mysqli.php on line 18
2019-04-09 15:25:41 - PHP Warning:  DB\MySQLi::query(): Couldn't fetch mysqli in /home/xxx/public_html/system/library/db/mysqli.php on line 20
2019-04-09 15:25:41 - PHP Warning:  mysqli::query(): Couldn't fetch mysqli in /home/xxx/public_html/system/library/db/mysqli.php on line 18
2019-04-09 15:25:41 - PHP Warning:  DB\MySQLi::query(): Couldn't fetch mysqli in /home/xxx/public_html/system/library/db/mysqli.php on line 20
2019-04-09 15:25:41 - PHP Warning:  mysqli::close(): Couldn't fetch mysqli in /home/xxx/public_html/system/library/db/mysqli.php on line 57
2019-04-09 15:25:41 - PHP Warning:  mysqli::query(): Couldn't fetch mysqli in /home/xxx/public_html/system/library/db/mysqli.php on line 18
2019-04-09 15:25:41 - PHP Warning:  DB\MySQLi::query(): Couldn't fetch mysqli in /home/xxx/public_html/system/library/db/mysqli.php on line 20
2019-04-09 15:25:41 - PHP Warning:  mysqli::query(): Couldn't fetch mysqli in /home/xxx/public_html/system/library/db/mysqli.php on line 18
2019-04-09 15:25:41 - PHP Warning:  DB\MySQLi::query(): Couldn't fetch mysqli in /home/xxx/public_html/system/library/db/mysqli.php on line 20
2019-04-09 15:25:41 - PHP Warning:  mysqli::query(): Couldn't fetch mysqli in /home/xxx/public_html/system/library/db/mysqli.php on line 18
2019-04-09 15:25:41 - PHP Warning:  DB\MySQLi::query(): Couldn't fetch mysqli in /home/xxx/public_html/system/library/db/mysqli.php on line 20
2019-04-09 15:25:41 - PHP Warning:  mysqli::query(): Couldn't fetch mysqli in /home/xxx/public_html/system/library/db/mysqli.php on line 18
2019-04-09 15:25:41 - PHP Warning:  DB\MySQLi::query(): Couldn't fetch mysqli in /home/xxx/public_html/system/library/db/mysqli.php on line 20
2019-04-09 15:25:41 - PHP Warning:  mysqli::close(): Couldn't fetch mysqli in /home/xxx/public_html/system/library/db/mysqli.php on line 57

 

[Krot]

такая же ошибка !появляется примерно раз в 3 дня . кто то решил её ? подскажите пожалуйста с чего начать что бы понять откуда эта ошибка ! спасибо