wp-json url returns 500 http code while litespeed cache plugin is active.

Hi,

Could you please go to admin area , left-side bar —> LiteSpeed Cache —> Toolbox —> [6] Debug Settings

in this page:

set Debug Log to Admin IP Only

add your IP into Admin IPs (you will see your IP below.)

set Debug Level to Advanced

save changes.

Now go to [7] Log View, click on admin-bar LiteSpeed Cache —> Purge All

then click button [D] Clear Log , keep this window open, don’t close it nor navigate away from it.

Now ,open a new window, access your wp-json link

once page is loaded , go back to Log View window and refresh this page, you should see the debug log is showing up.

Then please copy all the text , paste it into https://paste.ubuntu.com/

then post the link it generated for you.

Best regards,

Hi,

Done logs. Please check log once. https://paste.ubuntu.com/p/tfhRqxJTsR/
I thought might be php version so changed version from 7.4 to 7.2 still issue is same.

Regards

Hi,

Can you see any specific issue which can cause this?

Regards,

Hi,

No , from the log it seems everything is fine.

Do you have root access ? maybe server log would show something.

I tried to reproduce this error but can not successfully make it happen on my test site.

Best regards,

Hi,

I have root access. Let me know which log files are required and location I can send it.

Regards,

Hi @qtwrk,

Please provide your guidance to fix this issue.I can give logs from server if you can tell which logs and location of logs. Thanks

Regards,

Hi,

Please do following:

edit /usr/local/lsws/lsphpXX/etc/php.ini

where XX is your php version the site is using.

find

;error_log = php_errors.log

remove the ;

find

error_reporting = E_ALL & ~E_DEPRECATED & ~E_STRICT

change it to

error_reporting = E_ALL

save it , then run pkill lsphp

now trigger that error again , see if there is anything show up in /home/domain.com/public_html/php_errors.log

Best regards,

Hi @qtwrk,

Sorry for delay reply. Unfortunately nothing in error log after enabling php error log for php72. After enabling I got 2 warning message in log php_errors.log file.

[05-Jun-2020 04:32:42 UTC] PHP Warning:  Use of undefined constant full - assumed 'full' (this will throw an Error in a future version of PHP) in /home/bloggersideas.com/public_html/wp-content/plugins/schemaninja/templates/sidebar_template.php on line 48
[05-Jun-2020 04:32:42 UTC] PHP Warning:  Use of undefined constant full - assumed 'full' (this will throw an Error in a future version of PHP) in /home/bloggersideas.com/public_html/wp-content/plugins/schemaninja/templates/sidebar_template.php on line 48

So to remove warning message I removed that plugin from wordpress but still wp-json was giving 500 error page and no warning or php error in php_errors.log file.

I don’t know where to look for solution.

Hi,

Please create a ticket here

We will investigate it further.

Best regards,