Improve error message when wrong thing id is configured.

[aentinger]

Instead of

ArduinoIoTCloudTCP::handle_SubscribeMqttTopics could not subscribe to /a/t/THING_ID/e/i

display

ArduinoIoTCloudTCP::handle_SubscribeMqttTopics could not subscribe to /a/t/THING_ID/e/i
Check your thing configuration, and press the reset button on your board.

[github-actions]

Memory usage change @ f6d31bc

Board	flash	%	RAM for global variables	%
arduino:mbed:envie_m4	🔺 +72 - +144	+0.01 - +0.01	0 - 0	0.0 - 0.0
arduino:mbed:envie_m7	🔺 +72 - +144	+0.01 - +0.02	0 - 0	0.0 - 0.0
arduino:samd:mkr1000	🔺 +104 - +112	+0.04 - +0.04	0 - 0	0.0 - 0.0
arduino:samd:mkrgsm1400	🔺 +104 - +112	+0.04 - +0.04	0 - 0	0.0 - 0.0
arduino:samd:mkrnb1500	🔺 +104 - +112	+0.04 - +0.04	0 - 0	0.0 - 0.0
arduino:samd:mkrwan1300	0 - 0	0.0 - 0.0	0 - 0	0.0 - 0.0
arduino:samd:mkrwifi1010	🔺 0 - +112	0.0 - +0.04	0 - 0	0.0 - 0.0
arduino:samd:nano_33_iot	🔺 0 - +112	0.0 - +0.04	0 - 0	0.0 - 0.0
esp8266:esp8266:huzzah	🔺 +92 - +108	+0.01 - +0.01	0 - 0	0.0 - 0.0

Click for full report table

Board	examples/ArduinoIoTCloud-Advanced flash	%	examples/ArduinoIoTCloud-Advanced RAM for global variables	%	examples/ArduinoIoTCloud-Basic flash	%	examples/ArduinoIoTCloud-Basic RAM for global variables	%	examples/utility/ArduinoIoTCloud_Travis_CI flash	%	examples/utility/ArduinoIoTCloud_Travis_CI RAM for global variables	%	examples/utility/Provisioning flash	%	examples/utility/Provisioning RAM for global variables	%	examples/utility/SelfProvisioning flash	%	examples/utility/SelfProvisioning RAM for global variables	%
arduino:mbed:envie_m4	144	0.01	0	0.0	136	0.01	0	0.0	72	0.01	0	0.0	72	0.01	0	0.0
arduino:mbed:envie_m7	72	0.01	0	0.0	144	0.02	0	0.0	144	0.02	0	0.0	136	0.02	0	0.0
arduino:samd:mkr1000	112	0.04	0	0.0	112	0.04	0	0.0	112	0.04	0	0.0	104	0.04	0	0.0
arduino:samd:mkrgsm1400	112	0.04	0	0.0	112	0.04	0	0.0	104	0.04	0	0.0	112	0.04	0	0.0
arduino:samd:mkrnb1500	112	0.04	0	0.0	112	0.04	0	0.0	112	0.04	0	0.0	104	0.04	0	0.0
arduino:samd:mkrwan1300	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0
arduino:samd:mkrwifi1010	112	0.04	0	0.0	112	0.04	0	0.0	112	0.04	0	0.0	112	0.04	0	0.0	0	0.0	0	0.0
arduino:samd:nano_33_iot	112	0.04	0	0.0	112	0.04	0	0.0	112	0.04	0	0.0	112	0.04	0	0.0	0	0.0	0	0.0
esp8266:esp8266:huzzah	108	0.01	0	0.0	108	0.01	0	0.0	92	0.01	0	0.0

Click for full report CSV

Board,examples/ArduinoIoTCloud-Advanced<br>flash,%,examples/ArduinoIoTCloud-Advanced<br>RAM for global variables,%,examples/ArduinoIoTCloud-Basic<br>flash,%,examples/ArduinoIoTCloud-Basic<br>RAM for global variables,%,examples/utility/ArduinoIoTCloud_Travis_CI<br>flash,%,examples/utility/ArduinoIoTCloud_Travis_CI<br>RAM for global variables,%,examples/utility/Provisioning<br>flash,%,examples/utility/Provisioning<br>RAM for global variables,%,examples/utility/SelfProvisioning<br>flash,%,examples/utility/SelfProvisioning<br>RAM for global variables,%
arduino:mbed:envie_m4,144,0.01,0,0.0,136,0.01,0,0.0,72,0.01,0,0.0,72,0.01,0,0.0
arduino:mbed:envie_m7,72,0.01,0,0.0,144,0.02,0,0.0,144,0.02,0,0.0,136,0.02,0,0.0
arduino:samd:mkr1000,112,0.04,0,0.0,112,0.04,0,0.0,112,0.04,0,0.0,104,0.04,0,0.0
arduino:samd:mkrgsm1400,112,0.04,0,0.0,112,0.04,0,0.0,104,0.04,0,0.0,112,0.04,0,0.0
arduino:samd:mkrnb1500,112,0.04,0,0.0,112,0.04,0,0.0,112,0.04,0,0.0,104,0.04,0,0.0
arduino:samd:mkrwan1300,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,,,,
arduino:samd:mkrwifi1010,112,0.04,0,0.0,112,0.04,0,0.0,112,0.04,0,0.0,112,0.04,0,0.0,0,0.0,0,0.0
arduino:samd:nano_33_iot,112,0.04,0,0.0,112,0.04,0,0.0,112,0.04,0,0.0,112,0.04,0,0.0,0,0.0,0,0.0
esp8266:esp8266:huzzah,108,0.01,0,0.0,108,0.01,0,0.0,92,0.01,0,0.0,,,,,,,,