diff --git a/support/init/init-script.php b/support/init/init-script.php
--- a/support/init/init-script.php
+++ b/support/init/init-script.php
@@ -94,7 +94,8 @@
   )));
 
   // Disable the insanely dangerous XML entity loader by default.
-  if (function_exists('libxml_disable_entity_loader')) {
+  // PHP 8 deprecates this function and disables this by default.
+  if (function_exists('libxml_disable_entity_loader') && \PHP_VERSION_ID < 80000) {
     libxml_disable_entity_loader(true);
   }