How to fix ERROR 713 & 702 in SIMCOM series 76xx

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AT+HTTPINIT
OK

AT+HTTPPARA="URL","http://api.openw⸮athermap.org"
OK

AT+HTTPACTION=0
OK
+HTTPACTION: 0,713,0

AT+HTTPTERM
OK

---------------------------

AT+HTTPINIT
OK

AT+HTTPPARA="URL","http://api.openw⸮
ERROR

AT+HTTPACTION=0
+HTTPACTION: 0,702,0
OK

AT+HTTPTERM
OK

I coding in Arduino IDE for SIMCom A7670C, I follow "A76XX Series_HTTP(S)_Application Note_V1.03" datasheet and "76xx AT Command" datasheet.

I have a problem with HTTPACTION, error code is 713 and 702. How should I solve it?

I used ESP8266 connect with SIMCom.

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