Keeps throwing error in syslog

[mdmobashir]

I followed the instruction and on restarting I find that the WLAN0 didn't connect properly and uap0 keeps appearing/disappearing. On digging into the syslog, found the following error. Any idea what might be wrong. On disabling the dhcpcd the error stops but also the functionality stops too.

Dec 17 07:12:04 beam avahi-daemon[2157]: Interface uap0.IPv4 no longer relevant for mDNS.
Dec 17 07:12:04 beam avahi-daemon[2157]: Leaving mDNS multicast group on interface uap0.IPv4 with address 192.168.10.10.
Dec 17 07:12:04 beam avahi-daemon[2157]: Withdrawing address record for 192.168.10.10 on uap0.
Dec 17 07:12:04 beam kernel: [ 93.912815] brcmfmac: brcmf_cfg80211_change_iface: iface validation failed: err=-16
Dec 17 07:12:04 beam kernel: [ 94.016981] brcmfmac: brcmf_cfg80211_change_iface: iface validation failed: err=-16
Dec 17 07:12:04 beam kernel: [ 94.120976] brcmfmac: brcmf_cfg80211_change_iface: iface validation failed: err=-16
Dec 17 07:12:04 beam kernel: [ 94.225060] brcmfmac: brcmf_cfg80211_change_iface: iface validation failed: err=-16
Dec 17 07:12:04 beam kernel: [ 94.325934] brcmfmac: brcmf_cfg80211_change_iface: iface validation failed: err=-16
Dec 17 07:12:04 beam kernel: [ 94.426810] brcmfmac: brcmf_cfg80211_change_iface: iface validation failed: err=-16
Dec 17 07:12:04 beam kernel: [ 94.527721] brcmfmac: brcmf_cfg80211_change_iface: iface validation failed: err=-16
Dec 17 07:12:04 beam kernel: [ 94.628635] brcmfmac: brcmf_cfg80211_change_iface: iface validation failed: err=-16
Dec 17 07:12:04 beam kernel: [ 94.729545] brcmfmac: brcmf_cfg80211_change_iface: iface validation failed: err=-16
Dec 17 07:12:05 beam kernel: [ 94.830476] brcmfmac: brcmf_cfg80211_change_iface: iface validation failed: err=-16
Dec 17 07:12:05 beam kernel: [ 94.909534] brcmfmac: brcmf_set_wpa_version: set wpa_auth failed (-52)
Dec 17 07:12:05 beam kernel: [ 94.909543] brcmfmac: brcmf_cfg80211_connect: wl_set_wpa_version failed (-52)
Dec 17 07:12:05 beam avahi-daemon[2157]: Joining mDNS multicast group on interface uap0.IPv4 with address 192.168.10.10.
Dec 17 07:12:05 beam kernel: [ 94.931712] IPv6: ADDRCONF(NETDEV_UP): uap0: link is not ready
Dec 17 07:12:05 beam avahi-daemon[2157]: New relevant interface uap0.IPv4 for mDNS.
Dec 17 07:12:05 beam avahi-daemon[2157]: Registering new address record for 192.168.10.10 on uap0.IPv4.
Dec 17 07:12:05 beam kernel: [ 95.065132] brcmfmac: brcmf_cfg80211_start_ap: SET SSID error (-52)