RPi Does Not Connect to Wifi

Hi I’m able to connect to the internet using the Ethernet cable and after i set up my wifi using “pifi add ssid password”, I restarted the Pi and disconnected the ethernet cable. However I am not able to ssh to the Pi and Fing does not detect the connection. Please do assist.

I get this error when i try “pifi rescan” I wonder if it will help

AP Device is not active
Waiting for wifi rescan
Device is not connected to any network, Looking for pending connections
Connecting to RepublicPower
Traceback (most recent call last):
  File "/usr/bin/pifi", line 9, in <module>
    load_entry_point('pifi==0.9.0', 'console_scripts', 'pifi')()
  File "/usr/lib/python3/dist-packages/pifi/pifi.py", line 275, in main
  File "/usr/lib/python3/dist-packages/pifi/pifi.py", line 238, in rescan
    NetworkManager.NetworkManager.AddAndActivateConnection(best_con, ClientModeDevice, best_ap)
  File "<string>", line 6, in AddAndActivateConnection
  File "/usr/lib/python3/dist-packages/dbus/proxies.py", line 145, in __call__
  File "/usr/lib/python3/dist-packages/dbus/connection.py", line 651, in call_blocking
    message, timeout)
dbus.exceptions.DBusException: org.freedesktop.NetworkManager.Settings.UuidExists: A connection with this UUID already exists.

Seems like an actual pifi crash, haven’t seen that happen before. @rohbotics might be interested.