ci failure

[vincenzopalazzo]

┌───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
grpc_test_1   | │ #0   LogManager.debug (package:cln_common/src/logger/logger_manager.dart:16:13)
grpc_test_1   | │ dart-lightning/lndart.clnapp#1   new AppListFunds.fromJSON (package:clnapp/model/app_model/list_funds.dart:18:28)
grpc_test_1   | ├┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄
grpc_test_1   | │ 🐛 Full listfunds json received: {}
grpc_test_1   | └───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
grpc_test_1   | 
00:15 +4 -1: /root/test/grpc_client_appapi_test.dart: clnapp gRPC_client tests API List Funds [E]                                                                                                      
grpc_test_1   |   type 'Null' is not a subtype of type 'List<dynamic>' in type cast
grpc_test_1   |   package:clnapp/model/app_model/list_funds.dart 23:29  new AppListFunds.fromJSON
grpc_test_1   |   package:clnapp/api/cln/cln_client.dart 78:52          CLNApi.listFunds.<fn>
grpc_test_1   |   package:cln_grpc/src/cln_grpc_base.dart 101:22        GRPCClient.listFunds
grpc_test_1   |   
grpc_test_1   | 
grpc_test_1   | To run this test again: /usr/local/flutter/bin/cache/dart-sdk/bin/dart test /root/test/grpc_client_appapi_test.dart -p vm --plain-name 'clnapp gRPC_client tests API List Funds'

[vincenzopalazzo]

Reproduced in #32