Fallback to getEntryTypeById()

Fixes #16539

CHANGELOG.md

@@ -18,6 +18,7 @@
 - Fixed a bug where SSO logins would redirect to the front end by default.
 - Fixed a bug where SSO users were able to “reset” their passwords.
 - Fixed JavaScript error that occurred if there was problem sending a password-reset email.
+- Fixed an error that could occur when working with an entry whose type is no longer allowed by its section/field. ([#16539](https://github.com/craftcms/cms/issues/16539))
 
 ## 5.6.1 - 2025-01-22
 

src/elements/Entry.php

@@ -1530,7 +1530,12 @@ public function getType(): EntryType
                     fn(EntryType $entryType) => $entryType->id === $this->_typeId,
                 );
                 if (!$entryType) {
-                    throw new InvalidConfigException("Invalid entry type ID: $this->_typeId");
+                    // Maybe the section/field no longer allows this type,
+                    // so get it directly from the Entries service instead
+                    $entryType = Craft::$app->getEntries()->getEntryTypeById($this->_typeId);
+                    if (!$entryType) {
+                        throw new InvalidConfigException("Invalid entry type ID: $this->_typeId");
+                    }
                 }
             } else {
                 // Default to the section/field's first entry type