From 67e00c3de618833ad25b7975e2fcca072ebba43d Mon Sep 17 00:00:00 2001
From: okrad <enrico.triolo@gmail.com>
Date: Mon, 13 Dec 2021 23:33:26 +0100
Subject: [PATCH] Fix for #64?

---
 lib/src/token_storage.dart | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/lib/src/token_storage.dart b/lib/src/token_storage.dart
index ec48128..c7a58d2 100644
--- a/lib/src/token_storage.dart
+++ b/lib/src/token_storage.dart
@@ -38,12 +38,14 @@ class TokenStorage {
           found = (tkn['scope'] == null || tkn['scope'].isEmpty);
         } else {
           //...Otherwise look for a token granted to a superset of the requested scopes
-          final tknCleanScopes = clearScopes(tkn['scope'].cast<String>());
-
-          if (tknCleanScopes.isNotEmpty) {
-            var s1 = Set.from(tknCleanScopes);
-            var s2 = Set.from(cleanScopes);
-            found = s1.intersection(s2).length == cleanScopes.length;
+          if (tkn.containsKey('scope')) {
+            final tknCleanScopes = clearScopes(tkn['scope'].cast<String>());
+
+            if (tknCleanScopes.isNotEmpty) {
+              var s1 = Set.from(tknCleanScopes);
+              var s2 = Set.from(cleanScopes);
+              found = s1.intersection(s2).length == cleanScopes.length;
+            }
           }
         }