Fix 500 on /gradio_api/info: handle bool additionalProperties schemas

app.py

@@ -18,6 +18,28 @@ import pandas as pd
 import metrics
 import pipeline
 
+# gradio_client walks component API schemas to build /gradio_api/info. JSON Schema
+# allows `additionalProperties: true`, but the walker recurses into that bool as if
+# it were a schema and then does `"const" in schema`, raising
+#     TypeError: argument of type 'bool' is not iterable
+# which 500s /gradio_api/info -- the API panel and any gradio_client call -- while
+# the UI itself keeps serving. Short-circuit bool schemas before they reach get_type().
+# The recursive calls resolve this name through the module global, so rebinding it
+# covers the nested case that actually triggers here.
+try:
+    import gradio_client.utils as _gc_utils
+
+    _orig_schema_to_type = _gc_utils._json_schema_to_python_type
+
+    def _schema_to_type(schema, defs=None):
+        if isinstance(schema, bool):
+            return "Any" if schema else "None"
+        return _orig_schema_to_type(schema, defs)
+
+    _gc_utils._json_schema_to_python_type = _schema_to_type
+except Exception as exc:  # never let the shim take the app down
+    print(f"[startup] gradio_client schema patch skipped: {exc}")
+
 # ZeroGPU: only present on HF Spaces hardware, so the import is optional.
 try:
     import spaces