no voltage on digital pins when working with i2c

I want to connect multiple mpu6050 to Arduino. I connected via tca9548a multiplexer. Did as in the video But it didn’t work. The LED on the mpu6050 was off. The voltage on the digital pins was around 1V. Then I wanted to make it simpler and connect the VCC pin on the mpu6050 to the digital pins. I attach the script. Same. I downloaded the code only with power supply to the digital pins, there is voltage. Is this a problem in Arduino? I tested on Arduino UNO and on Arduino nano.

GetAngle1.ino (762 Bytes)

I have no idea; not familiar with MPU or TCA.

One thing that is probably needed in the code is a mpu6050.begin() for each mpu6050.