diff --git a/docker-compose.yml b/docker-compose.yml
index 4b56cd3..7326927 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -7,7 +7,7 @@ services:
     ports: 
       - 8080:80
     networks:
-      - catalog
+      - oc
     labels:
         - "traefik.enable=true"
         - "traefik.http.routers.front.entrypoints=web"
diff --git a/library/flutter_flow_chart/lib/src/ui/draw_arrow.dart b/library/flutter_flow_chart/lib/src/ui/draw_arrow.dart
index cd1b1a7..4876c10 100755
--- a/library/flutter_flow_chart/lib/src/ui/draw_arrow.dart
+++ b/library/flutter_flow_chart/lib/src/ui/draw_arrow.dart
@@ -443,7 +443,7 @@ class ArrowPainter extends CustomPainter {
   }) : pivots = pivots ?? [];
 
   List<dynamic> env;
-  List<dynamic> infos;
+  List<dynamic> infos = [];
   ArrowParams params;
   String toID;
   String fromID;