1 files changed, 9 insertions, 1 deletions
diff --git a/lib/private/Files/Storage/DAV.php b/lib/private/Files/Storage/DAV.php
index 10670d6331a..afd8f87e2de 100644
--- a/lib/private/Files/Storage/DAV.php
+++ b/lib/private/Files/Storage/DAV.php
@@ -350,7 +350,13 @@ class DAV extends Common {
 					}
 				}
 
-				return $response->getBody();
+				$content = $response->getBody();
+
+				if ($content === null || is_string($content)) {
+					return false;
+				}
+
+				return $content;
 			case 'w':
 			case 'wb':
 			case 'a':
@@ -390,6 +396,8 @@ class DAV extends Common {
 					$this->writeBack($tmpFile, $path);
 				});
 		}
+
+		return false;
 	}
 
 	public function writeBack(string $tmpFile, string $path): void {