'My esp32 gives random reading in the serial monitor
Iam using ESP32 with 4 type of sensors and external power supply to send the data to ThinkSpeak cloud. the Device was work noromally for cuble of months after that the device stop send data when I try to upload the code to the esp32 for second time the serial monitor give reading like in the image below 
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esp32 model= DOIT ESP32 DEVKIT V1 COMP5 stnsors type MQ7 MQ135 DHT22 DSM501a
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