v8.0.0: fix syntax error, proxy fallback, better timeouts

app.py

@@ -1060,10 +1060,10 @@ async def health():
 
 @app.get("/debug/refresh")
 async def force_refresh():
+    global http_client
     session.last_refresh = 0
     result = await session.refresh(http_client)
     if result is not None:
-        global http_client
         http_client = result
     return {
         "refreshed": True,