I have a problem, the lidar works through a TTL converter from USB to rasperri pi, but does not work through a gpio. I use ROS Kinetic and raspberry pi 4.

Package for rplidar. At "rplidar_c1.launch" file i replaced "serial_port"'s value from /dev/ttyUSB0 to /dev/tty/S0.I followed all these instructions for my ROS Kinetic. I remember once everything worked, but when I turned off the robot and left, and then came back and turned it on, nothing worked. If i try to start rplidar with "roslaunch rplidar_ros rplidar_c1.launch", I'll be stuck here.enter image description here Every time I check all connections. Multimeter shows 4.69 volts on red and blue lidar wire. I read documentation and it says there that the minimum voltage should be 4.8 volts. How can i fix this problem?