Compilation error about lws-esp32-factory HOT 6 CLOSED

--- idf_monitor on /dev/ttyUSB0 115200 ---
--- Quit: Ctrl+] | Menu: Ctrl+T | Help: Ctrl+T followed by Ctrl+H ---
ets Jun  8 2016 00:22:57

rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
ets Jun  8 2016 00:22:57

rst:0x10 (RTCWDT_RTC_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:2
load:0x3fff0020,len:4
load:0x3fff0024,len:3432
load:0x40078000,len:0
ho 12 tail 0 room 4
load:0x40078000,len:10964
entry 0x40078c40
4: gapss from LWS_GAPSS_INITIAL to LWS_GAPSS_SCAN
I (126) wifi: wifi firmware version: 59e5fab
I (126) wifi: config NVS flash: disabled
I (126) wifi: config nano formating: disabled
I (136) wifi: Init dynamic tx buffer num: 20
I (136) wifi: Init data frame dynamic rx buffer num: 20
I (146) wifi: Init management frame dynamic rx buffer num: 20
I (146) wifi: wifi driver task: 3ffc61bc, prio:23, stack:4096
I (156) wifi: Init static rx buffer num: 20
I (156) wifi: Init dynamic rx buffer num: 20
I (156) wifi: wifi power manager task: 0x3ffceccc prio: 21 stack: 2560
W (166) phy_init: failed to load RF calibration data (0x1102), falling back to full calibration
I (336) wifi: mode : sta (24:0a:c4:03:eb:88) + softAP (24:0a:c4:03:eb:89)
4: SYSTEM_EVENT_STA_DISCONNECTED
4: gapss from LWS_GAPSS_SCAN to LWS_GAPSS_SCAN
4:  mem: platform fd map:   120 bytes
4: ROMFS length 165KiB
{
 "schema": "lws1",
 "model": "lws",
 "builder": "mymachine",
 "app": "lws-esp32-factory",
 "user": "myname",
 "git": "3868f48-dirty",
 "date": "Mo 20. Nov 09:05:10 CET 2017",
 "unixtime": "1511165110",
 "file": "lws-esp32-factory-1511165110.bin",
 "factory": "y"
}
4: Creating Vhost 'ap' port 443, 4 protocols, IPv6 off
4:  Using SSL mode
4: Ignoring missing ap-cert.pem or ap-key.pem
4: no client cert required
4:  HTTP2 / ALPN enabled
4: created client ssl context for ap
4: lws_esp32_selfsigned: ap
4: lws_esp32_selfsigned: creating selfsigned initial certs
4: lws_esp32_selfsigned: generating 2048-bit RSA keypair... this may take a minute or so...
4: SYSTEM_EVENT_SCAN_DONE
Task watchdog got triggered. The following tasks did not reset the watchdog in time:
 - IDLE (CPU 0)
Tasks currently running:
CPU 0: main
CPU 1: IDLE
Task watchdog got triggered. The following tasks did not reset the watchdog in time:
 - IDLE (CPU 0)
Tasks currently running:
CPU 0: main
CPU 1: IDLE
Task watchdog got triggered. The following tasks did not reset the watchdog in time:
 - IDLE (CPU 0)
Tasks currently running:
CPU 0: main
CPU 1: IDLE
4: lws_esp32_selfsigned: keys done
4: lws_plat_write_cert: wrote ap-cert.pem
4: lws_plat_write_cert: wrote ap-key.pem
4: lws_esp32_selfsigned: cert creation complete
4: alloc_file: nvs: read ap-cert.pem, 1208 bytes
parsing as der
4: alloc_file: nvs: read ap-key.pem, 1675 bytes
1: lws_protocol_init: protocol lws-acme-client failed init
4:  heap :180136 (-13820)
4:  heap :182160 (+2024)
4:  heap :181920 (-240)
4:  heap :181680 (-240)
4: SYSTEM_EVENT_SCAN_DONE
4: scan_finished: count 10
4:  heap :182560 (+880)
4:  heap :182576 (+16)
...