HP Warning: call_user_func_array() expects parameter 1 to be a valid callback

  • mandor11

    (@mandor11)


    10 years ago

    Hi

    On my website i get random 500 internal server error on admin page or in website too. I check the error log there are two kind of error when website goes to 500 internal server error page:
    PHP Warning: call_user_func_array() expects parameter 1 to be a valid callback, class ‘mysqli’ does not have a method ‘get_option’ in /var/www/clients/client41/web40/web/wp-includes/plugin.php on line 235, referer: http://debrecenikutyaiskola.hu

    End of script output before headers: php-cgi-starter, referer: http://debrecenikutyaiskola.hu/wp-login.php

    There is any souliton to found where the website broke?

    Thank you,

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