fix: Update format for failed connection

main.py

@@ -1576,7 +1576,7 @@ def api_status():
     # This doesn't require a login
     # Check if the node is connected
     if not account_module.hsdConnected():
-        return jsonify({"status":400,"error": "Node not connected"}, 400)
+        return jsonify({"status":400,"error": "Node not connected"}), 400
     return jsonify({"status": 200,"result": "FireWallet is running"})
 
 
@@ -1625,4 +1625,4 @@ if __name__ == '__main__':
     if "--debug" in sys.argv:
         app.run(debug=True,host='0.0.0.0')
     else:
-        app.run(host='0.0.0.0')
+        app.run(host='0.0.0.0')