at_follows_flutter example fails to load Connections screen due to @Sign profile pics

[yahu1031]

Describe the bug

I was testing the at_follows_flutter package example and I found, the app is blocking me from getting the followers/following count. When I try debugging it more, It gave me Fetching keys for @capitalistfriedchicken throws Exception: cached:public:image.wavi@capitalistfriedchicken does not exist in keystore.(I got this after adding Exception catch in this function connections_service.dart#L371).

• I have loggedin with @armadillocoffeesilky
• I have 2 followers

To Reproduce

Steps to reproduce the behavior:

1. Clone the repository.
2. Head over to at_follows_flutter dir.
3. Open it with any of the IDE/Code editors.
4. Make the following changes, add Exception catch in this function connections_service.dart#L371

PREFFERED

// method to get atsign data
Future<Atsign> _getAtsignData(String? connection,
    {bool isFollowing = true, bool isNew = false}) async {
  AtKey atKey;
  Atsign atsignData = Atsign()
    ..title = connection
    ..isFollowing = following.list!.contains(connection);
  try {
    var data = connectionProvider.getData(!isFollowing, connection);
    // ... CODE ...
      atsignData.setData(atValue);
    }
  } on AtLookUpException catch (e) {
    _logger.severe('Fetching keys for $connection throws ${e.errorMessage}');
+  } on Exception catch (e) {
+    _logger.severe('Fetching keys for $connection throws ${e.toString()}');
  }

  return atsignData;
}

OR

// method to get atsign data
Future<Atsign> _getAtsignData(String? connection,
    {bool isFollowing = true, bool isNew = false}) async {
  AtKey atKey;
  Atsign atsignData = Atsign()
    ..title = connection
    ..isFollowing = following.list!.contains(connection);
  try {
    var data = connectionProvider.getData(!isFollowing, connection);
    // ... CODE ...
      atsignData.setData(atValue);
    }
-  } on AtLookUpException catch (e) {
+  } on Exception catch (e) {
    _logger.severe('Fetching keys for $connection throws ${e.errorMessage}');
  }

  return atsignData;
}

Add KeyNotFoundException case in errorMessage()

String? errorMessage(var exception) {
  switch (exception.runtimeType) {
    case AtClientException:
      return 'Unable to perform this action. Please try again.';
    // ... CODE ...
    case String:
      return exception;
+    case KeyNotFoundException:
+      return exception.message;
    case ResponseTimeOutException:
      return 'Server response timed out!\nPlease check your network connection and try again. Contact support@atsign.com if the issue still persists.';
    default:
      return 'Failed while loading\n please reopen the screen again.';
  }
}

Expected behavior

Must cache the user images if they exist.

Screenshots

With changes

With out changes

Smartphone (please complete the following information):

• Device: iPhone12
• OS: iOS15.2

Were you using an @‎application when the bug was found?

• at_follows_flutter example app

Additional context

Logs with changes

Launching lib[/main.dart]() on iPhone 12 in debug mode...
lib/main.dart:1
Warning: Missing build name (CFBundleShortVersionString).
Warning: Missing build number (CFBundleVersion).
Action Required: You must set a build name and number in the pubspec.yaml file version field before submitting to the App Store.
flutter: INFO|2022-02-21 18:22:08.967883|Connections Service|Received notification:: id:-1 key:statsNotification.@armadillocoffeesilky operation:update from:@armadillocoffeesilky to:@armadillocoffeesilky
flutter: INFO|2022-02-21 18:22:23.907207|Connections Service|Received notification:: id:-1 key:statsNotification.@armadillocoffeesilky operation:update from:@armadillocoffeesilky to:@armadillocoffeesilky
Xcode build done.                                           23.7s
Connecting to VM Service at ws://127.0.0.1:54579[/BVCjBurTiik]()=[/ws]()
flutter: initialiazed notification service
flutter: INFO|2022-02-21 18:30:08.968874|KeyChainUtil|Retrieved atsigns [@armadillocoffeesilky] from Keychain
flutter: initializing storage
flutter: INFO|2022-02-21 18:30:09.041720|HiveBase|commit_log_ad52aeee56c8222e8aaf6a2d172446b3f1a012d0b4db08ecbfc6105f483a73e9 initialized successfully
flutter: AtServer.getHiveSecretFromFile file found
flutter: INFO|2022-02-21 18:30:09.124781|HiveBase|ad52aeee56c8222e8aaf6a2d172446b3f1a012d0b4db08ecbfc6105f483a73e9 initialized successfully
flutter: INFO|2022-02-21 18:30:17.872313|AtLookup|auth success
flutter: INFO|2022-02-21 18:30:17.879295|KeyChainUtil|Retrieved atsigns [@armadillocoffeesilky] from Keychain
flutter: INFO|2022-02-21 18:30:17.896259|At Onboarding Flutter|Onboarding...!
flutter: INFO|2022-02-21 18:30:27.572672|Follows Widget|provider status is null
flutter: SEVERE|2022-02-21 18:30:27.650410|Connections Service|Fetching keys for @mangotangostable throws Exception: cached:public:image.wavi@mangotangostable does not exist in keystore
flutter: SEVERE|2022-02-21 18:30:27.653732|Connections Service|Fetching keys for @capitalistfriedchicken throws Exception: cached:public:image.wavi@capitalistfriedchicken does not exist in keystore
flutter: INFO|2022-02-21 18:30:27.669340|Follows Widget|provider status is Status.loading
flutter: INFO|2022-02-21 18:30:27.951379|Follows Widget|provider status is Status.done
flutter: INFO|2022-02-21 18:30:28.060894|Follows Widget|provider status is Status.done
flutter: INFO|2022-02-21 18:30:28.537594|AtLookup|auth success
flutter: INFO|2022-02-21 18:30:28.869095|SyncService|Returning the serverCommitId 511
flutter: INFO|2022-02-21 18:30:39.009500|Connections Service|Received notification:: id:-1 key:statsNotification.@armadillocoffeesilky operation:update from:@armadillocoffeesilky to:@armadillocoffeesilky

Logs without changes

Launching lib[/main.dart]() on iPhone 12 in debug mode...
lib/main.dart:1
Warning: Missing build name (CFBundleShortVersionString).
Warning: Missing build number (CFBundleVersion).
Action Required: You must set a build name and number in the pubspec.yaml file version field before submitting to the App Store.
Xcode build done.                                           24.5s
Connecting to VM Service at ws://127.0.0.1:56773[/31iajWmazrE]()=[/ws]()
flutter: initialiazed notification service
flutter: INFO|2022-02-21 18:41:45.448631|KeyChainUtil|Retrieved atsigns [@armadillocoffeesilky] from Keychain
flutter: initializing storage
flutter: INFO|2022-02-21 18:41:45.485073|HiveBase|commit_log_ad52aeee56c8222e8aaf6a2d172446b3f1a012d0b4db08ecbfc6105f483a73e9 initialized successfully
flutter: AtServer.getHiveSecretFromFile file found
flutter: INFO|2022-02-21 18:41:45.519936|HiveBase|ad52aeee56c8222e8aaf6a2d172446b3f1a012d0b4db08ecbfc6105f483a73e9 initialized successfully
flutter: INFO|2022-02-21 18:41:54.188767|AtLookup|auth success
flutter: INFO|2022-02-21 18:41:54.195292|KeyChainUtil|Retrieved atsigns [@armadillocoffeesilky] from Keychain
flutter: INFO|2022-02-21 18:41:54.213303|At Onboarding Flutter|Onboarding...!
flutter: INFO|2022-02-21 18:42:03.015967|AtLookup|auth success
flutter: INFO|2022-02-21 18:42:03.268166|SyncService|Returning the serverCommitId 511
flutter: INFO|2022-02-21 18:44:48.131906|Follows Widget|provider status is null
flutter: INFO|2022-02-21 18:44:48.254972|Follows Widget|provider status is Status.error

• Related issues are/tasks blocked by this
  at_follows_flutter example is not working #357
  Pub.dev documentation at_follows_flutter  #283

[yahu1031]

the main ticket has been closed, So closing this duplicate too.