diff --git a/graphene/relay/node.py b/graphene/relay/node.py
index 8defefff..75e88cb7 100644
--- a/graphene/relay/node.py
+++ b/graphene/relay/node.py
@@ -97,6 +97,13 @@ class Node(AbstractNode):
                 f"Exception message: {str(e)}"
             )
 
+        # from_global_id returns "" in the case of decode errors
+        if _type == "" and _id == "":
+            raise Exception(
+                f'Unable to parse global ID "{global_id}". '
+                'Make sure it is a base64 encoded string in the format: "TypeName:id". '
+            )
+
         graphene_type = info.schema.get_type(_type)
         if graphene_type is None:
             raise Exception(f'Relay Node "{_type}" not found in schema')
diff --git a/graphene/test/__init__.py b/graphene/test/__init__.py
index 8591dc06..517d8997 100644
--- a/graphene/test/__init__.py
+++ b/graphene/test/__init__.py
@@ -1,5 +1,5 @@
 from promise import Promise, is_thenable
-from graphql.error import format_error as format_graphql_error
+from graphql.error.graphql_error import format_error as format_graphql_error
 from graphql.error import GraphQLError
 
 from graphene.types.schema import Schema