Trouble for Bluetooth Connection (Invalid HW cmd)

I control RedBearLab BLE Nano using Blynk on iPhone.
After recent iOS-app update, the following errors (Invalid HW cmd) was happened for BLYNK_WRITE(V1).

[104]
___ __ __
/ _ )/ /_ _____ / /__
/ _ / / // / _ / '/
/
//_, /////_
/
__/ v0.4.7 on MBED

Waiting for connections…
[49335] Device connected
[50218] Ready
[55378] Invalid HW cmd: 1248474445-0
[56128] Invalid HW cmd: 1248474445-0

Is this a bug of iOS-app (BLYNK version 2.9.0)?

Hi. Yes, this is a known bug in 2.9.0. The fix is on its way.