Hey there, I have connected NodeMCU to Thinger using MQTT protocol. But after a while, Thinger automatically shuts down the device. I am implementing temperature analysis system where in I am sending data from temperature to thinger bucket every 15 minutes. How do I stop thinger from shutting down devices? Here are some logs of the same. Thanks in advance. 
2021-12-21 06:18:26.311 ( 759.247s) [worker thread 1 ] socket_server.hpp:60 INFO| received connection from: ip: xxx.xx.xx.x, port: 1883, secure: 0
2021-12-21 06:18:26.311 ( 759.247s) [worker thread 1 ] mqtt_connection.cpp:346 INFO| MQTT connection with protocol 3.1.1
2021-12-21 06:18:26.317 ( 759.253s) [worker thread 1 ] device.cpp:200 INFO| device connected: amogh@Amoghs_Device
2021-12-21 06:18:26.347 ( 759.283s) [worker thread 1 ] buckets.cpp:888 INFO| writing bucket: amogh@MQTT_test
2021-12-21 06:18:26.347 ( 759.283s) [worker thread 1 ] http_request.cpp:78 INFO| [HTTP CLIENT REQUEST] POST /write?db=amogh&precision=ms
2021-12-21 06:18:26.392 ( 759.328s) [worker thread 1 ] http_response.cpp:139 INFO| [HTTP CLIENT RESPONSE] HTTP/1.1 204 No Content
2021-12-21 06:18:26.429 ( 759.365s) [worker thread 1 ] events_pool.cpp:229 INFO| creating subscription (user: amogh) (event: mqtt_topic_publish), (connection: 2001780288) (subscription: 2600075725): {“event”:“mqtt_topic_publish”,“topic”:“mqtt/temp”} (5 total)
2021-12-21 06:18:26.430 ( 759.366s) [worker thread 1 ] buckets.cpp:888 INFO| writing bucket: amogh@MQTT_test
2021-12-21 06:18:26.430 ( 759.366s) [worker thread 1 ] http_request.cpp:78 INFO| [HTTP CLIENT REQUEST] POST /write?db=amogh&precision=ms
2021-12-21 06:21:53.312 ( 966.248s) [worker thread 1 ] device.cpp:61 INFO| shutting down device amogh@Amoghs_Device: 0
2021-12-21 06:21:53.313 ( 966.249s) [worker thread 1 ] events_pool.cpp:253 INFO| removing subscription (user: amogh) (event: mqtt_topic_publish) (connection: 2001780288) (subscription: 2600075725)