welcome
Is it possible to find out what this error is in osclass

PHP Warning:  count(): Parameter must be an array or an object that implements Countable in /home/osmasblc/public_html/oc-includes/osclass/controller/item.php on line 711
 PHP Fatal error:  Uncaught Error: Call to a member function numRows() on boolean in /home/osmasblc/public_html/oc-includes/osclass/model/Category.php:126
Stack trace:
#0 /home/fddsblc/public_html/oc-includes/osclass/model/Category.php(206): Category->listWhere('b.s_name != '' ...')
#1 /home/fddsblc/public_html/oc-includes/osclass/model/Category.php(231): Category->listEnabled()
#2 /home/fddsblc/public_html/oc-includes/osclass/model/Category.php(72): Category->toTree()
#3 /home/fddsblc/public_html/oc-includes/osclass/model/Category.php(38): Category->__construct('ar_SY')
#4 /home/fddsblc/public_html/oc-includes/osclass/helpers/hCategories.php(116): Category::newInstance()
#5 /home/fddsblc/public_html/oc-content/themes/eva/404.php(321): osc_has_categories()
#6 /home/fddsblc/public_html/oc-includes/osclass/helpers/hDefines.php(288): require('/home/fddsblc/...')
#7 /home/fddsblc/public_html/oc-includes/osclass/core/BaseModel.php(113): osc_current_web_theme_path('404.php')
#8 /home/fddsblc/public_html/oc-includes/osclass/ in /home/fddsblc/public_html/oc-includes/osclass/model/Category.php on line 126
 PHP Warning:  fsockopen(): php_network_getaddresses: getaddrinfo failed: No address associated with hostname in /home/fddsblc/public_html/oc-includes/osclass/utils.php on line 341
 PHP Warning:  fsockopen(): unable to connect to search.yahooapis.com:80 (php_network_getaddresses: getaddrinfo failed: No address associated with hostname) in /home/fddsblc/public_html/oc-includes/osclass/utils.php on line 341
 PHP Warning:  fsockopen(): php_network_getaddresses: getaddrinfo failed: No address associated with hostname in /home/fddsblc/public_html/oc-includes/osclass/utils.php on line 341
 PHP Warning:  fsockopen(): unable to connect to search.yahooapis.com:80 (php_network_getaddresses: getaddrinfo failed: No address associated with hostname) in /home/fddsblc/public_html/oc-includes/osclass/utils.php on line 341
 PHP Warning:  fsockopen(): php_network_getaddresses: getaddrinfo failed: Name or service not known in /home/fddsblc/public_html/oc-includes/osclass/utils.php on line 341
 PHP Warning:  fsockopen(): unable to connect to search.yahooapis.com:80 (php_network_getaddresses: getaddrinfo failed: Name or service not known) in /home/fddsblc/public_html/oc-includes/osclass/utils.php on line 341

@7ala
First set with category might be fixed in next osclass release.
Another one is probably from some sitemap plugin that pings yahoo, but it is more-less irrelevant error.

Thank you very much

PHP Warning:  fsockopen(): php_network_getaddresses: getaddrinfo failed: No address associated with hostname in /home/fddsblc/public_html/oc-includes/osclass/utils.php on line 341

PHP Warning:  fsockopen(): unable to connect to search.yahooapis.com:80 (php_network_getaddresses: getaddrinfo failed: No address associated with hostname) in /home/fddsblc/public_html/oc-includes/osclass/utils.php on line 341

 PHP Warning:  fsockopen(): php_network_getaddresses: getaddrinfo failed: No address associated with hostname in /home/fddsblc/public_html/oc-includes/osclass/utils.php on line 341

 PHP Warning:  fsockopen(): unable to connect to search.yahooapis.com:80 (php_network_getaddresses: getaddrinfo failed: No address associated with hostname) in /home/fddsblc/public_html/oc-includes/osclass/utils.php on line 341

PHP Warning:  fsockopen(): php_network_getaddresses: getaddrinfo failed: Name or service not known in /home/fddsblc/public_html/oc-includes/osclass/utils.php on line 341

 PHP Warning:  fsockopen(): unable to connect to search.yahooapis.com:80 (php_network_getaddresses: getaddrinfo failed: Name or service not known) in /home/fddsblc/public_html/oc-includes/osclass/utils.php on line 341

PHP Warning:  fsockopen(): php_network_getaddresses: getaddrinfo failed: No address associated with hostname in /home/fddsblc/public_html/oc-includes/osclass/utils.php on line 341

 PHP Warning:  fsockopen(): unable to connect to search.yahooapis.com:80 (php_network_getaddresses: getaddrinfo failed: No address associated with hostname) in /home/fddsblc/public_html/oc-includes/osclass/utils.php on line 341

 PHP Warning:  fsockopen(): php_network_getaddresses: getaddrinfo failed: Name or service not known in /home/fddsblc/public_html/oc-includes/osclass/utils.php on line 341

 PHP Warning:  fsockopen(): unable to connect to search.yahooapis.com:80 (php_network_getaddresses: getaddrinfo failed: Name or service not known) in /home/fddsblc/public_html/oc-includes/osclass/utils.php on line 341

Is this error related to opening the site?
Where there is a problem
The site is working, no problem
But some people do not open the link for them
message comes
error connection timed out
I contacted the provider
They have no problem

@7ala
These errors should be rather communicated with hosting provider.

This one can be ignored:
PHP Warning:  fsockopen(): unable to connect to search.yahooapis.com:80 (php_network_getaddresses: getaddrinfo failed: No address associated with hostname) in /home/fddsblc/public_html/oc-includes/osclass/utils.php on line 341