Fix "Future attached to a different loop" error by ensuring tasks are created in the correct event loop

- Explicitly retrieve and use the correct event loop when creating tasks to avoid cross-loop issues.
- Ensures proper task scheduling in environments with multiple event loops.

crawl4ai/scraper/bfs_scraper_strategy.py

@@ -264,7 +264,8 @@ class BFSScraperStrategy(ScraperStrategy):
                         self.stats.current_depth = depth
                         
                         if parallel_processing:
-                            task = asyncio.create_task(
+                            loop = asyncio.get_event_loop()
+                            task = loop.create_task(
                                 self.process_url(url, depth, crawler, queue, visited, depths)
                             )
                             pending_tasks.add(task)