diff --git a/queries/1777478.yaml b/queries/1777478.yaml
new file mode 100644
index 00000000..1f49b04b
--- /dev/null
+++ b/queries/1777478.yaml
@@ -0,0 +1,3 @@
+query: >-
+  message:"Couldn't communicate with cell 'child': ValueError: An object of type nova.objects.instance.TrustedCerts is required in field trusted_certs, not a dict" AND
+  tags:"screen-n-cell-child.txt"