fix: Send unencrypted thumbnails

There was just one toString() missing and this
lead to a crash in the app because hive tries to store
an URI.

CHANGELOG.md

@@ -1,3 +1,6 @@
+## [0.3.5] - 28nd Aug 2021
+- hotfix: Send unencrypted thumbnails
+
 ## [0.3.4] - 28nd Aug 2021
 - fix: String.parseIdentifierIntoParts not working with unicode matrix.to links
     Some clients do not uri-encode the identifier for matrix.to links, so we must

lib/src/room.dart

@@ -689,7 +689,7 @@ class Room {
       'info': {
         ...file.info,
         if (thumbnail != null && encryptedThumbnail == null)
-          'thumbnail_url': thumbnailUploadResp,
+          'thumbnail_url': thumbnailUploadResp.toString(),
         if (thumbnail != null && encryptedThumbnail != null)
           'thumbnail_file': {
             'url': thumbnailUploadResp.toString(),

pubspec.yaml

@@ -1,6 +1,6 @@
 name: matrix
 description: Matrix Dart SDK
-version: 0.3.4
+version: 0.3.5
 homepage: https://famedly.com
 
 environment: