Fix undefined error in in onTusError (#3848)

packages/@uppy/locales/src/nl_NL.js

@@ -192,7 +192,7 @@ nl_NL.strings = {
     '1': 'Je moet minstens %{smart_count} bestanden selecteren',
   },
   zoomIn: 'Zoom in',
-  zoomOut: 'Zoom uit'
+  zoomOut: 'Zoom uit',
 }
 
 if (typeof Uppy !== 'undefined') {

packages/@uppy/transloadit/src/index.js

@@ -731,7 +731,7 @@ export default class Transloadit extends BasePlugin {
   }
 
   #onTusError = (file, err) => {
-    this.#closeAssemblyIfExists(file.transloadit?.assembly)
+    this.#closeAssemblyIfExists(file?.transloadit?.assembly)
     if (err?.message?.startsWith('tus: ')) {
       const endpoint = err.originalRequest?.getUnderlyingObject()?.responseURL
       this.client.submitError(err, { endpoint, type: 'TUS_ERROR' })