EC-25 MQTT Mosquitto

Hi Everyone,
I’m trying to publish some messages on mosquitto but with any luck.
Here i post the log:

2021-07-30 17:06:55:488[Send->]AT+QICSGP=1,1,“ibox.tim.it”,"","",1
2021-07-30 17:06:55:501[Recv<-]
OK

2021-07-30 17:07:27:953[Send->]AT+QMTCFG=“aliauth”,0,“oyjtmPl5a5j”,“MQTT_TEST”,“wN9Y6pZSIIy7Exa5qVzcmigEGO4kAazZ”
2021-07-30 17:07:27:967[Recv<-]
ERROR

2021-07-30 17:07:48:984[Send->]AT+QMTOPEN=0,“test.mosquitto.org”,1883
2021-07-30 17:07:48:998[Recv<-]
OK

2021-07-30 17:07:49:590[Recv<-]
+QMTOPEN: 0,0

2021-07-30 17:08:24:826[Recv<-]
+QMTSTAT: 0,1

2021-07-30 17:08:24:841[Send->]AT+QMTCONN=0,“clientExample”
ERROR

2021-07-30 17:08:24:947[Send->]Port Control Line: CI (CT125) is [0]!

2021-07-30 17:08:43:225[Send->]AT+QMTSUB=0,1,“topic/example”,2
2021-07-30 17:08:43:239[Recv<-]
ERROR

I tried to follow the MQTT application note for ec25 module but can’t find a way to subscribe e publish to a topic.

Thanks for the help.

2021-07-30 17:28:53:265[Send->]ATI
2021-07-30 17:28:53:282[Recv<-]
Quectel
EC25
Revision: EC25EUGAR06A05M4G

OK

Hello Marco_Geraldi, thanks for your question on quectel forums
I see you use 'topic/example’as your topic name during subscribe the topic, you should make sure this name consistent with the published topic name, our application note can be refer only, thank you.