/*
    if (sht30.get() == 0) {  // Obtain the data of shT30.  获取sht30的数据
        tmp = sht30.cTemp;   // Store the temperature obtained from shT30.
                             // 将sht30获取到的温度存储
        hum = sht30.humidity;  // Store the humidity obtained from the SHT30.
                               // 将sht30获取到的湿度存储
    } else {
        tmp = 0, hum = 0;
    }
    */

it does not crash, but of course it does not display the temperature!
So...it points to the "sht30.get()" function.

When I replace it with inline code:
(and declare this: unsigned int data[6];)
Wire.beginTransmission(0x44); //0x44 for M5Stack ENV (0x45 is DFRobot)
Wire.write(0x2C); //show all the "wheels and gears"
Wire.write(0x06);
Wire.endTransmission();
delay(50);
Wire.requestFrom(0x44, 6);
data[0] = Wire.read();
data[1] = Wire.read();
data[2] = Wire.read();
data[3] = Wire.read();
data[4] = Wire.read();
data[5] = Wire.read();
tmp = ((((data[0] * 256.0) + data[1]) * 175) / 65535.0) - 45;
hum = ((((data[3] * 256.0) + data[4]) * 100) / 65535.0);

The sensor works!