Yes. These are some of them. But when I tried fron anonymous_chrome the problem solved!
[Mon Jan 21 23:13:05.369212 2019] [fcgid:warn] [pid 803:tid 140541745059584] [client 188.73.246.65:34770] mod_fcgid: stderr: PHP Warning: Use of undefined constant \xe2\x80\x98WP_AUTO_UPDATE_CORE\xe2\x80\x99 - assumed '\xe2\x80\x98WP_AUTO_UPDATE_CORE\xe2\x80\x99' (this will throw an Error in a future version of PHP) in /var/www/vhosts/onlymaths.gr/httpdocs/wp-config.php on line 82, referer:
Log In ‹ Only Maths — WordPress
[Mon Jan 21 23:13:07.657294 2019] [fcgid:warn] [pid 11774:tid 140541177911040] [client 188.73.246.65:34808] mod_fcgid: stderr: PHP Warning: Use of undefined constant \xe2\x80\x98WP_AUTO_UPDATE_CORE\xe2\x80\x99 - assumed '\xe2\x80\x98WP_AUTO_UPDATE_CORE\xe2\x80\x99' (this will throw an Error in a future version of PHP) in /var/www/vhosts/onlymaths.gr/httpdocs/wp-config.php on line 82, referer:
Log In ‹ Only Maths — WordPress
[Mon Jan 21 23:13:08.017090 2019] [fcgid:warn] [pid 803:tid 140541471655680] [client 188.73.246.65:34810] mod_fcgid: stderr: PHP Warning: Use of undefined constant \xe2\x80\x98WP_AUTO_UPDATE_CORE\xe2\x80\x99 - assumed '\xe2\x80\x98WP_AUTO_UPDATE_CORE\xe2\x80\x99' (this will throw an Error in a future version of PHP) in /var/www/vhosts/onlymaths.gr/httpdocs/wp-config.php on line 82, referer:
https://www.onlymaths.gr/wp-admin/edit.php?post_type=wbcr-snippets&wbcr_inp_snippet_updated=1
[Mon Jan 21 23:13:22.207703 2019] [fcgid:warn] [pid 11774:tid 140541396121344] [client 188.73.246.65:34948] mod_fcgid: stderr: PHP Warning: Use of undefined constant \xe2\x80\x98WP_AUTO_UPDATE_CORE\xe2\x80\x99 - assumed '\xe2\x80\x98WP_AUTO_UPDATE_CORE\xe2\x80\x99' (this will throw an Error in a future version of PHP) in /var/www/vhosts/onlymaths.gr/httpdocs/wp-config.php on line 82, referer:
https://www.onlymaths.gr/wp-admin/edit.php?post_type=wbcr-snippets&wbcr_inp_snippet_updated=1