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-rw-r--r--changelog.d/9229.bugfix1
-rw-r--r--synapse/util/module_loader.py3
2 files changed, 3 insertions, 1 deletions
diff --git a/changelog.d/9229.bugfix b/changelog.d/9229.bugfix
new file mode 100644
index 0000000000..3ed32291de
--- /dev/null
+++ b/changelog.d/9229.bugfix
@@ -0,0 +1 @@
+Fix a bug where `None` was passed to Synapse modules instead of an empty dictionary if an empty module `config` block was provided in the homeserver config.
\ No newline at end of file
diff --git a/synapse/util/module_loader.py b/synapse/util/module_loader.py
index 1ee61851e4..09b094ded7 100644
--- a/synapse/util/module_loader.py
+++ b/synapse/util/module_loader.py
@@ -49,7 +49,8 @@ def load_module(provider: dict, config_path: Iterable[str]) -> Tuple[Type, Any]:
     module = importlib.import_module(module)
     provider_class = getattr(module, clz)
 
-    module_config = provider.get("config")
+    # Load the module config. If None, pass an empty dictionary instead
+    module_config = provider.get("config") or {}
     try:
         provider_config = provider_class.parse_config(module_config)
     except jsonschema.ValidationError as e: