Finish appservice txn storage impl and tests.

1 files changed, 1 insertions, 1 deletions

diff --git a/synapse/storage/schema/delta/15/appservice_txns.sql b/synapse/storage/schema/delta/15/appservice_txns.sql

index 11f0c799aa..ff15aa019e 100644
--- a/synapse/storage/schema/delta/15/appservice_txns.sql
+++ b/synapse/storage/schema/delta/15/appservice_txns.sql
@@ -15,7 +15,7 @@
 
 CREATE TABLE IF NOT EXISTS application_services_state(
     as_id INTEGER PRIMARY KEY,
-    state TEXT NOT NULL,
+    state TEXT,
     last_txn TEXT,
     FOREIGN KEY(as_id) REFERENCES application_services(id)
 );