RC7620 and HTTPS

Hi everybody.

Now I am donging on the SR7620 module. I have a problem:
I use the HTTP post method via AT commands (refer sample.txt file in this topic “Upgrading HTTP from HL to RC series”. but I have received an error code (+KHTTP_ERROR: 1,5). I do not why. and I don’t know how to fix it.

I have 2 SR7620 modules. A module is loaded firmware version “Revision: SWI9X07H_00.03.03.00 2bb7a4 jenkins 2020/04/15 07:57:29” another is “Revision: SWI9X07H_00.08.07.00 0ce4c1 jenkins 2021/03/17 02:18:20”
both the modules as the same error code when I use HTTP_post.

everybody tell me how to fix it.
detail, please refer to the file attactment. In herehttp_fail.txt (1.6 KB)

[2021-04-13_13:56:34:323]AT
[2021-04-13_13:56:34:323]OK
[2021-04-13_13:56:37:056]ati
[2021-04-13_13:56:37:058]Manufacturer: Sierra Wireless, Incorporated
[2021-04-13_13:56:37:058]Model: RC7620
[2021-04-13_13:56:37:058]Revision: SWI9X07H_00.03.03.00 2bb7a4 jenkins 2020/04/15 07:57:29
[2021-04-13_13:56:37:058]IMEI: 353634110170700
[2021-04-13_13:56:37:058]IMEI SV: 14
[2021-04-13_13:56:37:058]FSN: 7Q1017851913B0
[2021-04-13_13:56:37:058]+GCAP: +CGSM

[2021-04-13_13:56:37:058]OK
[2021-04-13_13:56:43:124]AT+CPINR

[2021-04-13_13:56:43:124]+CPINR: SIM PIN,3
[2021-04-13_13:56:43:124]+CPINR: SIM PUK,10
[2021-04-13_13:56:43:124]+CPINR: SIM PIN2,3
[2021-04-13_13:56:43:124]+CPINR: SIM PUK2,10
[2021-04-13_13:56:43:124]+CPINR: PH-NET PIN,255
[2021-04-13_13:56:43:124]+CPINR: PH-NETSUB PIN,255
[2021-04-13_13:56:43:124]+CPINR: PH-SP PIN,255
[2021-04-13_13:56:43:124]+CPINR: PH-CORP PIN,255
[2021-04-13_13:56:43:124]+CPINR: PH-FSIM PIN,255

[2021-04-13_13:56:43:124]OK
[2021-04-13_13:56:45:848]AT+CSQ

[2021-04-13_13:56:45:848]+CSQ: 28,99

[2021-04-13_13:56:45:848]OK
[2021-04-13_13:56:52:053]at+kcnxcfg=1,“GPRS”,“m3-world”,“mms”,“mms”

[2021-04-13_13:56:52:060]OK
[2021-04-13_13:56:55:202]at+khttpcfg=1,“httpbin.org”,80

[2021-04-13_13:56:55:261]+KHTTPCFG: 1

[2021-04-13_13:56:55:261]OK

[2021-04-13_13:56:55:267]+KCNX_IND: 1,4,1

[2021-04-13_13:56:55:267]+KCNX_IND: 1,2,1,2,30

[2021-04-13_13:57:25:274]+KCNX_IND: 1,4,2
[2021-04-13_13:57:25:282]+KCNX_IND: 1,2,2,2,30
[2021-04-13_13:57:25:285]+KHTTP_ERROR: 1,5

[2021-04-13_13:57:55:290]+KCNX_IND: 1,4,3
[2021-04-13_13:57:55:300]+KCNX_IND: 1,2,3,2,30