Unable to connect to wireless network.
Could not connect to the Wi-Fi network because the Wi-Fi password is not correctly set on the PS4, or the wireless network is busy.
Go to Settings > Network > Set up Internet Connection to configure the network settings again.
If the error only occurs in a limited period of time, the wireless network may be busy and preventing the connection. Try disconnecting other devices from the wireless network and try the Internet connection test at Settings > Network > Test Internet Connection. If you cannot disconnect other devices from the wireless network, try the Internet connection test on PS4 later.