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![Solved] Attempting MQTT connection... Failed. rc=-1 or rc=-2 or rc=-4 | General MQTT Errors Explained. - Electronics Innovation](https://i0.wp.com/electronicsinnovation.com/wp-content/uploads/2021/06/Screenshot-378.png?resize=640%2C303&ssl=1 "Solved] Attempting MQTT connection... Failed. rc=-1 or rc=-2 or rc=-4 | General MQTT Errors Explained. - Electronics Innovation")
Solved] Attempting MQTT connection... Failed. rc=-1 or rc=-2 or rc=-4 | General MQTT Errors Explained. - Electronics Innovation
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Understanding MQTT Topics
