(i installed librealsense2.49.0 that was latest) it should delete pyrealsense2.so pyrealsense2.so.2.49 pyrealsense2.so.2.49.0 in the /usr/local/lib also should delete all of librealsense-2.49 version

it should change to

version="2.48.0-0~realsense0.4976" sudo apt-get install librealsense2-dkms sudo apt-get install librealsense2=${version} sudo apt-get install librealsense2-gl=${version} sudo apt-get install librealsense2-net=${version} sudo apt-get install librealsense2-utils=${version} sudo apt-get install librealsense2-dev=${version} sudo apt-get install librealsense2-dbg=${version}

and then should follow by instructions

and then it should be realsense-ros-3.2.2 as follow instructions on the ros2-ws no default realsense-ros in github in the ros2_ws (i was default latest realsense-ros in your github)

and then run ros2 launch realsense2_camera rs_launch.py initial_reset:=true

and then i got error

[INFO] [launch]: All log files can be found below /home/semi/.ros/log/2021-10-13-14-54-20-892715-semi-UPN-APL01-293561 [INFO] [launch]: Default logging verbosity is set to INFO [INFO] [realsense2_camera_node-1]: process started with pid [293576] [realsense2_camera_node-1] [INFO]: RealSense ROS v3.2.2 [realsense2_camera_node-1] [INFO]: Built with LibRealSense v2.48.0 [realsense2_camera_node-1] [INFO]: Running with LibRealSense v2.48.0 [realsense2_camera_node-1] [INFO]: Device with serial number 912112070403 was found. [realsense2_camera_node-1] [realsense2_camera_node-1] [INFO]: Device with physical ID 1-4-11 was found. [realsense2_camera_node-1] [INFO]: Device with name Intel RealSense D435 was found. [realsense2_camera_node-1] [INFO]: Device with port number 1-4 was found. [realsense2_camera_node-1] [INFO]: Device USB type: 2.1 [realsense2_camera_node-1] [WARN]: Device 912112070403 is connected using a 2.1 port. Reduced performance is expected. [realsense2_camera_node-1] [INFO]: Resetting device... [realsense2_camera_node-1] [INFO]: Device with serial number 912112070403 was found. [realsense2_camera_node-1] [realsense2_camera_node-1] [INFO]: Device with physical ID 1-4-12 was found. [realsense2_camera_node-1] [INFO]: Device with name Intel RealSense D435 was found. [realsense2_camera_node-1] [INFO]: Device with port number 1-4 was found. [realsense2_camera_node-1] [INFO]: Device USB type: 2.1 [realsense2_camera_node-1] [WARN]: Device 912112070403 is connected using a 2.1 port. Reduced performance is expected. [realsense2_camera_node-1] [INFO]: getParameters... [realsense2_camera_node-1] [INFO]: setupDevice... [realsense2_camera_node-1] [INFO]: JSON file is not provided [realsense2_camera_node-1] [INFO]: Device Name: Intel RealSense D435 [realsense2_camera_node-1] [INFO]: Device Serial No: 912112070403 [realsense2_camera_node-1] [INFO]: Device physical port: 1-4-12 [realsense2_camera_node-1] [INFO]: Device FW version: 05.12.15.50 [realsense2_camera_node-1] [INFO]: Device Product ID: 0x0B07 [realsense2_camera_node-1] [INFO]: Enable PointCloud: Off [realsense2_camera_node-1] [INFO]: Align Depth: Off [realsense2_camera_node-1] [INFO]: Sync Mode: Off [realsense2_camera_node-1] [INFO]: Device Sensors: [realsense2_camera_node-1] [INFO]: Stereo Module was found. [realsense2_camera_node-1] [INFO]: RGB Camera was found. [realsense2_camera_node-1] [INFO]: (Infrared, 0) sensor isn't supported by current device! -- Skipping... [realsense2_camera_node-1] [INFO]: (Fisheye, 0) sensor isn't supported by current device! -- Skipping... [realsense2_camera_node-1] [INFO]: (Fisheye, 1) sensor isn't supported by current device! -- Skipping... [realsense2_camera_node-1] [INFO]: (Fisheye, 2) sensor isn't supported by current device! -- Skipping... [realsense2_camera_node-1] [INFO]: (Pose, 0) sensor isn't supported by current device! -- Skipping... [realsense2_camera_node-1] [INFO]: (Confidence, 0) sensor isn't supported by current device! -- Skipping... [realsense2_camera_node-1] [INFO]: num_filters: 0 [realsense2_camera_node-1] [INFO]: Setting Dynamic reconfig parameters. [realsense2_camera_node-1] [WARN]: Could not set param: stereo_module.auto_exposure_limit with 0Range: [1, 165000]: parameter 'stereo_module.auto_exposure_limit' could not be set: Parameter {} doesn't comply with integer range. [realsense2_camera_node-1] [WARN]: Could not set param: stereo_module.auto_gain_limit with 0Range: [16, 248]: parameter 'stereo_module.auto_gain_limit' could not be set: Parameter {} doesn't comply with integer range. [realsense2_camera_node-1] [INFO]: Done Setting Dynamic reconfig parameters. [realsense2_camera_node-1] [INFO]: depth stream is enabled - width: 640, height: 480, fps: 15, Format: Z16 [realsense2_camera_node-1] [INFO]: color stream is enabled - width: 640, height: 480, fps: 15, Format: RGB8 [realsense2_camera_node-1] [INFO]: setupPublishers... [realsense2_camera_node-1] [INFO]: setupStreams... [realsense2_camera_node-1] 13/10 14:54:29,343 WARNING [140027862439680] (messenger-libusb.cpp:42) control_transfer returned error, index: 768, error: Resource temporarily unavailable, number: 11 [realsense2_camera_node-1] [INFO]: SELECTED BASE:Depth, 0 [realsense2_camera_node-1] [INFO]: RealSense Node Is Up! [realsense2_camera_node-1] [WARN]: [realsense2_camera_node-1] 13/10 14:54:29,583 WARNING [140027862439680] (messenger-libusb.cpp:42) control_transfer returned error, index: 768, error: Resource temporarily unavailable, number: 11 [realsense2_camera_node-1] 13/10 14:54:29,633 WARNING [140027862439680] (messenger-libusb.cpp:42) control_transfer returned error, index: 768, error: Resource temporarily unavailable, number: 11 [realsense2_camera_node-1] 13/10 14:54:29,684 WARNING [140027862439680] (messenger-libusb.cpp:42) control_transfer returned error, index: 768, error: Resource temporarily unavailable, number: 11 [realsense2_camera_node-1] 13/10 14:54:29,734 WARNING [140027862439680] (messenger-libusb.cpp:42) control_transfer returned error, index: 768, error: Resource temporarily unavailable, number: 11 [realsense2_camera_node-1] 13/10 14:54:29,785 WARNING [140027862439680] (messenger-libusb.cpp:42) control_transfer returned error, index: 768, error: Resource temporarily unavailable, number: 11 [realsense2_camera_node-1] 13/10 14:54:29,843 WARNING [140027862439680] (messenger-libusb.cpp:42) control_transfer returned error, index: 768, error: Resource temporarily unavailable, number: 11 [realsense2_camera_node-1] 13/10 14:54:29,894 WARNING [140027862439680] (messenger-libusb.cpp:42) control_transfer returned error, index: 768, error: Resource temporarily unavailable, number: 11 [realsense2_camera_node-1] 13/10 14:54:29,944 WARNING [140027862439680] (messenger-libusb.cpp:42) control_transfer returned error, index: 768, error: Resource temporarily unavailable, number: 11 [realsense2_camera_node-1] 13/10 14:54:29,995 WARNING [140027862439680] (messenger-libusb.cpp:42) control_transfer returned error, index: 768, error: Resource temporarily unavailable, number: 11 [realsense2_camera_node-1] 13/10 14:54:30,045 WARNING [140027862439680] (messenger-libusb.cpp:42) control_transfer returned error, index: 768, error: Resource temporarily unavailable, number: 11 [realsense2_camera_node-1] 13/10 14:54:30,096 WARNING [140027862439680] (messenger-libusb.cpp:42) control_transfer returned error, index: 768, error: Resource temporarily unavailable, number: 11 [realsense2_camera_node-1] 13/10 14:54:30,146 WARNING [140027862439680] (messenger-libusb.cpp:42) control_transfer returned error, index: 768, error: Resource temporarily unavailable, number: 11 [realsense2_camera_node-1] 13/10 14:54:30,196 WARNING [140027862439680] (messenger-libusb.cpp:42) control_transfer returned error, index: 768, error: Resource temporarily unavailable, number: 11 [realsense2_camera_node-1] 13/10 14:54:30,247 WARNING [140027862439680] (messenger-libusb.cpp:42) control_transfer returned error, index: 768, error: Resource temporarily unavailable, number: 11 [realsense2_camera_node-1] 13/10 14:54:30,298 WARNING [140027862439680] (messenger-libusb.cpp:42) control_transfer returned error, index: 768, error: Resource temporarily unavailable, number: 11 [realsense2_camera_node-1] 13/10 14:54:30,348 WARNING [140027862439680] (messenger-libusb.cpp:42) control_transfer returned error, index: 768, error: Resource temporarily unavailable, number: 11 [realsense2_camera_node-1] 13/10 14:54:30,398 WARNING [140027862439680] (messenger-libusb.cpp:42) control_transfer returned error, index: 768, error: Resource temporarily unavailable, number: 11 [realsense2_camera_node-1] 13/10 14:54:30,449 WARNING [140027862439680] (messenger-libusb.cpp:42) control_transfer returned error, index: 768, error: Resource temporarily unavailable, number: 11 [realsense2_camera_node-1] 13/10 14:54:30,500 WARNING [140027862439680] (messenger-libusb.cpp:42) control_transfer returned error, index: 768, error: Resource temporarily unavailable, number: 11 [realsense2_camera_node-1] 13/10 14:54:30,550 WARNING [140027862439680] (messenger-libusb.cpp:42) control_transfer returned error, index: 768, error: Resource temporarily unavailable, number: 11 [realsense2_camera_node-1] 13/10 14:54:30,601 WARNING [140027862439680] (messenger-libusb.cpp:42) control_transfer returned error, index: 768, error: Resource temporarily unavailable, number: 11 [realsense2_camera_node-1] 13/10 14:54:30,651 WARNING [140027862439680] (messenger-libusb.cpp:42) control_transfer returned error, index: 768, error: Resource temporarily unavailable, number: 11 [realsense2_camera_node-1] 13/10 14:54:30,659 ERROR [140027317651200] (uvc-streamer.cpp:106) uvc streamer watchdog triggered on endpoint: 130 [realsense2_camera_node-1] 13/10 14:54:30,702 WARNING [140027862439680] (messenger-libusb.cpp:42) control_transfer returned error, index: 768, error: Resource temporarily unavailable, number: 11 [realsense2_camera_node-1] 13/10 14:54:30,752 WARNING [140027862439680] (messenger-libusb.cpp:42) control_transfer returned error, index: 768, error: Resource temporarily unavailable, number: 11 [realsense2_camera_node-1] 13/10 14:54:30,803 WARNING [140027862439680] (messenger-libusb.cpp:42) control_transfer returned error, index: 768, error: Resource temporarily unavailable, number: 11 [realsense2_camera_node-1] 13/10 14:54:30,854 WARNING [140027862439680] (messenger-libusb.cpp:42) control_transfer returned error, index: 768, error: Resource temporarily unavailable, number: 11 [realsense2_camera_node-1] 13/10 14:54:30,905 WARNING [140027862439680] (messenger-libusb.cpp:42) control_transfer returned error, index: 768, error: Resource temporarily unavailable, number: 11 [realsense2_camera_node-1] [WARN]: Hardware Notification:Depth stream start failure,1.6341e+12,Error,Hardware Error [realsense2_camera_node-1] 13/10 14:54:30,955 WARNING [140027862439680] (messenger-libusb.cpp:42) control_transfer returned error, index: 768, error: Resource temporarily unavailable, number: 11