librcl.so: cannot open shared object file: No such file or directory

[Mithilesh982]

Description
I'm built a web app using React as frontend and node.js as backend , to connect ros2 and my nodejs im using rclnodejs but while running the code error is showing like :
server/node_modules/bindings/bindings.js:121
throw e;
^
Error: librcl.so: cannot open shared object file: No such file or directory
at Module._extensions..node (node:internal/modules/cjs/loader:1473:18)
at Module.load (node:internal/modules/cjs/loader:1207:32)
at Module._load (node:internal/modules/cjs/loader:1023:12)
at Module.require (node:internal/modules/cjs/loader:1235:19)
at require (node:internal/modules/helpers:176:18)
at bindings (/home/eric/CUB-E_frontent_r2/server/node_modules/bindings/bindings.js:112:48)
at Object. (/home/eric/CUB-E_frontent_r2/server/node_modules/rclnodejs/lib/clock.js:17:38)
at Module._compile (node:internal/modules/cjs/loader:1376:14)
at Module._extensions..js (node:internal/modules/cjs/loader:1435:10)
at Module.load (node:internal/modules/cjs/loader:1207:32) {
code: 'ERR_DLOPEN_FAILED'
}
-node : v20.10.0

• Library Version: rclnodejs 0.23.2
• ROS Version: Ros2 humble
• Platform / OS: ubuntu 22.04

Steps To Reproduce

const rclnodejs = require('rclnodejs')
rclnodejs.init().then(()=>{
const node = new rclnodejs.Node('ros2_connectivity_turtlebot3');
const publisher = rclnodejs.createPublisher('std_msgs/msg/String','cmd_vel ')
publisher.publish('Hello from react server')

node.spin()

})

Expected Behavior
srever running on 4000

Actual Behavior
error

[minggangw]

It seem that the ld doesn't find the librcl.so, please check echo $LD_LIBRARY_PATH to see if the ROS2 lib path is there?

[Mithilesh982]

It seem that the ld doesn't find the librcl.so, please check echo $LD_LIBRARY_PATH to see if the ROS2 lib path is there?

Ros2 lib is path Setup correctly, Thanks for your time .
The error occurred because of nodejs version 20.x , rclnodejs version is only compatible with nodejs version 10.23.1 - 19.x. , so I just reinstall 19.x version and it solved the error.

You can see the full installation of rclnodejs from scratch https://github.com/ros2/ros2/blob/master/ros2.repos.

[minggangw]

I'm using nodejs v20.9.0, but didn't meet this error. Not sure why it doesn't work on your env.