lsapi:error in Apache error_log

[1phut30giayvi]

Hello,

We have a customer with Magento and suddenly they started to get 503 error in backend of Magento.
Checking apache error logs I find these:
[Mon Apr 15 11:24:06.310795 2019] [lsapi:error] [pid 1200210:tid 47435881735936] [client 139.xx.xx.xx:59548] [host domain.tld] Error receiving response: ReceiveResponse: receive pkg hdr failed: ReceivePkgHdr: nothing to read from backend (LVE ID 557), check https://[http://docs.cloudlinux.com/...eshooting.html, referer: https://domain.tld/

I cannot see any issues with either PHP, mod_sec or resources for this account.
Why cannot customers find these logs themselves in cPanel/error_log? Is there a way for customer to get access to these logs?

Any suggestions on where to check what is causing this issue?](http://docs.cloudlinux.com/mod_lsapi_troubleshooting.html)

[morten]

In this case it seems like the issue was PHP version as customer has old Magento. It seems like a update from your servers caused the PHP version change in WHM. Customer was using native, but it was changed to use ea-php and not alt-php, even though logs show something else: [Tue Apr 09 02:50:23 2019] sulsphp: uid557/username); gid557/username); with suexec mode; cmd/opt/cpanel/ea-php70/root/usr/bin/lsphp) [Tue Apr 09 02:51:09 2019] sulsphp: uid557/username); gid557/username); with suexec mode; cmd/opt/cloudlinux/alt-php53/root/usr/bin/lsphp) Not sure why you show incorrect or like that in the logs though. Customer is now using Alt-PHP 5.6, but showing this in sulsphp_log: [Mon Apr 15 12:36:06 2019] sulsphp: uid557/username); gid557/username); with suexec mode; cmd/opt/cpanel/ea-php70/root/usr/bin/lsphp)

[ighertesco]

Hello,

Please submit a ticket to our support team at https://cloudlinux.zendesk.com, so we could take a closer look,

Thank you.