Issue #3150990 by cburschka: Updater::install() crashes on file transfer exceptions

core/lib/Drupal/Core/Updater/Updater.php

@@ -291,7 +291,7 @@ public function install(&$filetransfer, $overrides = []) {
       return $this->postInstallTasks();
     }
     catch (FileTransferException $e) {
-      throw new UpdaterFileTransferException("File Transfer failed, reason: '" . strtr($e->getMessage(), $e->arguments)) . "'";
+      throw new UpdaterFileTransferException("File Transfer failed, reason: '" . strtr($e->getMessage(), $e->arguments) . "'");
     }
   }