WHMCS suddenly no longer works

[djixas]

Hi, out of blue, no updates, nothing, my WHMCS 7x is no longer working, restoring old backup gives same error, installing ioncube / reinstalling does nothing

Member / admin area gives this error

The file /home/xxxx/public_html/members/djfire/index.php is corrupted.

WHMCS version as per the index page is 7.7.1 and it should have Ioncube of atleast version 10.1.
Currently the website is having ionCube PHP Loader + ionCube24 v10.4.5

We have found certain WHMCS related errors from the logs as given below

 

WHMCS Application] ERROR: InvalidArgumentException: Query string must not includea URI fragment in /home/xxxxx/public_html/members/vendor/zendframework/zend-diactoros/src/Uri.php:386 Stacktrace: 
#0 /home/xxxxx/public_html/members/vendor/zendframework/zend-diactoros/src/ServerRequestFactory.php(280): Zend\Diactoros\Uri->withQuery('rp=%2Fknowledge...') 
#1 /home/xxxxx/public_html/members/vendor/zendframework/zend-diactoros/src/ServerRequestFactory.php(66): Zend\Diactoros\ServerRequestFactory::marshalUriFromServer(Array, Array) 
#2 /home/xxxxx/public_html/members/vendor/whmcs/whmcs-foundation/lib/Http/Message/ServerRequest.php(0): Zend\Diactoros\ServerRequestFactory::fromGlobals(Array, NULL, NULL, NULL, Array) 
#3 /home/xxxxx/public_html/members/index.php(0): WHMCS\Http\Message\ServerRequest::fromGlobals() 
#4 {main} {"exception":"[object] (InvalidArgumentException(code: 0): Query string must not include a URI fragment at /home/xxxxx/public_html/members/vendor/zendframework/zend-diactoros/src/Uri.php:386)"} []

[WHMCS John]

Hi @djixas,

This indicates that the index.php file has been modified, hereby making it unreadable bu the Ioncube loaders.

Re-uploading a fresh copy of the file in question will resolve this.