cannot send session cookies
 

I have upgrade my fourm form 4.2.2 to 4.2.5. After that forum work fine from my admin id. when i delete cookies of my pc following error shown
https://vborg.vbsupport.ru/external/2017/07/4.jpg



navbar tabs looks like this
https://vborg.vbsupport.ru/external/2017/07/5.jpg


After that i cannot access forum. when i tried to open the forum only blank page appear.


error logs shown following error



PHP Warning: session_start(): Cannot send session cookie - headers already sent by (output started at /home/***************/includes/config.php:1) in /home/***************/includes/facebook/facebook.php on line 49
PHP Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /home/**************/includes/config.php:1) in /home/****************/includes/facebook/facebook.php on line 49
PHP Fatal error: Call to undefined method stdClass::set() in /home/***************/includes/functions.php on line 7549

I'm thinking this may have to do with PHP version and/or a modification. What is your PHP version set to when running vB4.2.5?

You can try disabling each modification you have installed one-by-one, to see which is causing the issue.

I cannnot access forum

Current PHP version: 5.6.31

Can you access the back-end i.e. the Administrator Control Panel?

If you can't access admincp to disable each mod one-by-one then try my article info here, it shows you how to disable mods without admincp access.

nothing happen by disable mods

Okay then its a matter of older php version conflicting with newer version of vBulletin. Have your host place you on PHP7 (7.0 not 7.1 for now).

If your cpanel has an option "Select PHP Version" you can try that yourself before asking your host for assistance. *Screenshot the old modules before changing in case you need to revert back to PHP5.6 etc.

I could not find "select php version" option in cpanel. Now i ask host provider for this.
thanks for your help

--------------- Added [DATE]1500092259[/DATE] at [TIME]1500092259[/TIME] ---------------

the following error shown on php 7.0.21

Error: Call to undefined method stdClass::set() in ..../includes/functions.php on line 7549

--------------- Added [DATE]1500121163[/DATE] at [TIME]1500121163[/TIME] ---------------

error log shown follwing error. above error showm on opening forum

UTC] PHP Warning: session_start(): Cannot send session cookie - headers already sent by (output started at /home/************/includes/config.php:1) in /home/*********/includes/facebook/facebook.php on line 49
PHP Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /home**************/includes/config.php:1) in /home/****************/includes/facebook/facebook.php on line 49

--------------- Added [DATE]1500121418[/DATE] at [TIME]1500121418[/TIME] ---------------

I also tried PHP 7.1.7. but same error occur