[main] failed to start the concentrator

[abhinav-2307]

*** Beacon Packet Forwarder for Lora Gateway ***
Version: 4.0.1
*** Lora concentrator HAL library version info ***
Version: 5.0.1;

---

INFO: Little endian host
INFO: found global configuration file global_conf.json, parsing it
INFO: global_conf.json does contain a JSON object named SX1301_conf, parsing SX1 301 parameters
INFO: lorawan_public 1, clksrc 1
INFO: no configuration for LBT
INFO: antenna_gain 0 dBi
INFO: Configuring TX LUT with 16 indexes
INFO: radio 0 enabled (type SX1257), center frequency 865200000, RSSI offset -16 6.000000, tx enabled 1, tx_notch_freq 129000
INFO: radio 1 enabled (type SX1257), center frequency 866385000, RSSI offset -16 6.000000, tx enabled 0, tx_notch_freq 0
INFO: Lora multi-SF channel 0> radio 0, IF -137500 Hz, 125 kHz bw, SF 7 to 12
INFO: Lora multi-SF channel 1> radio 0, IF 202500 Hz, 125 kHz bw, SF 7 to 12
INFO: Lora multi-SF channel 2> radio 1, IF -400000 Hz, 125 kHz bw, SF 7 to 12
INFO: Lora multi-SF channel 3 disabled
INFO: Lora multi-SF channel 4 disabled
INFO: Lora multi-SF channel 5 disabled
INFO: Lora multi-SF channel 6 disabled
INFO: Lora multi-SF channel 7 disabled
INFO: Lora standard channel 8 disabled
INFO: FSK channel 8 disabled
INFO: global_conf.json does contain a JSON object named gateway_conf, parsing ga teway parameters
INFO: server hostname or IP address is configured to "router.as.thethings.networ k"
INFO: upstream port is configured to "1700"
INFO: downstream port is configured to "1700"
INFO: packets received with a valid CRC will be forwarded
INFO: packets received with a CRC error will NOT be forwarded
INFO: packets received with no CRC will NOT be forwarded
INFO: GPS serial port path is configured to "/dev/serial0"
INFO: found local configuration file local_conf.json, parsing it
INFO: redefined parameters will overwrite global parameters
INFO: local_conf.json does not contain a JSON object named SX1301_conf
INFO: local_conf.json does contain a JSON object named gateway_conf, parsing gat eway parameters
INFO: gateway MAC address is configured to B827EBFCEDF9DAE7
INFO: packets received with a valid CRC will be forwarded
INFO: packets received with a CRC error will NOT be forwarded
INFO: packets received with no CRC will NOT be forwarded
INFO: [main] TTY port /dev/serial0 open for GPS synchronization
ERROR: [main] failed to start the concentrator

[abhinav-2307]

Dec 13 14:16:31 lora_gateway mtp-probe: checking bus 1, device 4: "/sys/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.1/1-1.1.1"
Dec 13 14:16:31 lora_gateway mtp-probe: bus: 1, device: 4 was not an MTP device
Dec 13 14:16:31 lora_gateway mtp-probe: checking bus 1, device 4: "/sys/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.1/1-1.1.1"
Dec 13 14:16:31 lora_gateway mtp-probe: bus: 1, device: 4 was not an MTP device
Dec 13 14:16:34 lora_gateway lightdm[437]: Error getting user list from org.freedesktop.Accounts: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.f$
Dec 13 14:16:36 lora_gateway lightdm[495]: Error getting user list from org.freedesktop.Accounts: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.f$

after entering cd /var/log/
nano user.log.1
so,i wanted find the exact isuues and solution for this .
and ehat is lightdm error