Close readpool only if it exists

Author: vprivat-ads

CHANGES.md

@@ -2,6 +2,10 @@
 
 ## [Unreleased]
 
+### Fixed
+
+- Close readpool only if it exists ([#331](https://github.com/stac-utils/stac-fastapi-pgstac/pull/331))
+
 ## [6.1.2] - 2025-11-24
 
 ### Changed

stac_fastapi/pgstac/db.py

@@ -83,7 +83,8 @@ async def connect_to_db(
 
 async def close_db_connection(app: FastAPI) -> None:
     """Close connection."""
-    await app.state.readpool.close()
+    if pool := getattr(app.state, "readpool", None):
+        await pool.close()
     if pool := getattr(app.state, "writepool", None):
         await pool.close()