Merge pull request #4268 from nextcloud/backport/4253/stable30

[stable30] Fix errors when extracting content controls

Author: juliusknorr

lib/Service/TemplateFieldService.php

@@ -77,7 +77,7 @@ public function extractFields(Node|int $file): array {
 			$httpClient = $this->clientService->newClient();
 
 			$form = RemoteOptionsService::getDefaultOptions();
-			$form['query'] = ['limit' => 'content-control'];
+			$form['query'] = ['filter' => 'contentcontrol'];
 			$form['multipart'] = [[
 				'name' => 'data',
 				'contents' => $file->getStorage()->fopen($file->getInternalPath(), 'r'),
@@ -93,7 +93,7 @@ public function extractFields(Node|int $file): array {
 			$fields = [];
 
 			foreach ($documentStructure as $index => $attr) {
-				$fieldType = FieldType::tryFrom($attr['type']) ?? null;
+				$fieldType = FieldType::tryFrom($attr['type'] ?? '') ?? null;
 				if ($fieldType === null) {
 					continue;
 				}