Update app.py

app.py

@@ -86,7 +86,12 @@ def step():
 
     agent_position = next_state
 
-    return jsonify({'agent_position': agent_position, 'target': target, 'maze': maze.tolist()})
+    # Convert NumPy arrays to lists to ensure JSON serializability
+    return jsonify({
+        'agent_position': list(agent_position),
+        'target': list(target),
+        'maze': maze.tolist()
+    })
 
 if __name__ == '__main__':
     app.run(host='0.0.0.0', port=7860)