Uncaught Error: Call to a member function query() lite speed [closed]

Good morning, I’m a new user and I have no idea if I have violated any civil rules.
I’m not a programmer, but I own my site and I don’t know how to intervene.
Can you kindly help me with this error that my site is reporting?
Thank you very much

[STDERR] PHP Fatal error: Uncaught Error: Call to a member function
query() on null in
/home/urzt2skc/domains/samiricambi.com/public_html/classes/db/DbPDO.php:165nStack
trace:n#0
/home/urzt2skc/domains/samiricambi.com/public_html/classes/db/Db.php(376):
DbPDOCore->_query(‘ntttSELECT iso...')n#1 /home/urzt2skc/domains/samiricambi.com/public_html/classes/db/Db.php(663): DbCore->query('ntttSELECT iso…’)n#2
/home/urzt2skc/domains/samiricambi.com/public_html/classes/db/Db.php(697):
DbCore->getRow(‘ntttSELECT iso...', true)n#3 /home/urzt2skc/domains/samiricambi.com/public_html/classes/Country.php(274): DbCore->getValue('ntttSELECT iso…’)n#4
/home/urzt2skc/domains/samiricambi.com/public_html/modules/litespeedcache/classes/VaryCookie.php(234):
CountryCore::getIsoById(10)n#5
/home/urzt2skc/domains/samiricambi.com/public_html/modules/litespeedcache/classes/VaryCookie.php(76):
LiteSpeedCacheVaryCookie->init(Object(Context), Object(Cookie))n#6
/home/urzt2skc/domains/samiricambi.com/public_html/modules/litespeedcache/classe
in
/home/urzt2skc/domains/samiricambi.com/public_html/classes/db/DbPDO.php
on line 165n