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I have followed all the steps. Now I can successfully create a HotSpot and connect to it. But my RPi Zero won't detect existing saved WiFi Networks, my SSID is 'CT83_WiFi_2.4G' are any characters causing problems?

I tried `sudo raspi-config` >> 'Network Options' >> 'WiFi', I got `Failed to Communicate with wpa_supplicant` error.
I tried `wpa_cli` in the terminal and it was stuck at retrying.

I am now stuck forever in Hotspot Mode? any ideas?