StackChan World connection fails with "Driver Error 17" after firmware update to 1.6.2 #129

After updating my M5Stack StackChan to firmware 1.6.2, I can no longer connect to it from the StackChan World app. The connection worked before the firmware update.

Steps to reproduce

1. Update the StackChan firmware to 1.6.2.
2. Try to connect to the StackChan from the StackChan World app.

Expected behavior

The app connects to the StackChan as it did before the update.

Actual behavior

The connection fails and the app displays Driver Error 17.