Workaround for Python 3.8 Asyncio issues with Win 10

upload_wotb_replays.py

@@ -241,4 +241,13 @@ def getTitle(replayfile: str, title: str, i : int) -> str:
 
 ### main() -------------------------------------------
 if __name__ == "__main__":
-   asyncio.run(main(sys.argv[1:]), debug=False)
+	# To avoid 'Event loop is closed' RuntimeError due to compatibility issue with aiohttp
+	if sys.platform.startswith("win") and sys.version_info >= (3, 8):
+		try:
+			from asyncio import WindowsSelectorEventLoopPolicy
+		except ImportError:
+			pass
+		else:
+			if not isinstance(asyncio.get_event_loop_policy(), WindowsSelectorEventLoopPolicy):
+				asyncio.set_event_loop_policy(WindowsSelectorEventLoopPolicy())
+	asyncio.run(main(sys.argv[1:]), debug=False)