[ERROR] [launch]: Caught exception in launch: get_launch_arguments() missing 1 required positional argument: 'self'
Hi, I'm just trying to work with ros2 launch file.. it runs well but i could not launch it, following error pops up :
[INFO] [launch]: Default logging verbosity is set to INFO
[ERROR] [launch]: Caught exception in launch (see debug for traceback): get_launch_arguments() missing 1 required positional argument: 'self'
find cpp:
int main(int argc, char * argv[])
{
rclcpp::init(argc, argv);
auto node = rclcpp::Node::make_shared("test");
RCLCPP_INFO(node->get_logger(), "Hello!, Ros2 launch worked for me");
rclcpp::shutdown();
return 0;
}
mytext.launch.py file :
import launch
import launch.actions
import launch.substitutions
import launch_ros.actions
def generate_launch_description():
return launch.LaunchDescription
(
[
launch_ros.actions.Node
(
package='simple_test',
node_executable='my_test',
output='screen'
)
]
)
Cmakelsit.txt:
cmake_minimum_required(VERSION 3.5)
project(simple_test)
if(NOT CMAKE_C_STANDARD)
set(CMAKE_C_STANDARD 99)
endif()
if(NOT CMAKE_CXX_STANDARD)
set(CMAKE_CXX_STANDARD 14)
endif()
if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID MATCHES "Clang")
add_compile_options(-Wall -Wextra -Wpedantic)
endif()
find_package(ament_cmake REQUIRED)
find_package(rclcpp REQUIRED)
find_package(std_msgs REQUIRED)
if(BUILD_TESTING)
find_package(ament_lint_auto REQUIRED)
ament_lint_auto_find_test_dependencies()
endif()
add_executable(my_test src/test.cpp)
ament_target_dependencies(my_test rclcpp std_msgs)
install(TARGETS
my_test
DESTINATION lib/${PROJECT_NAME}
)
install(DIRECTORY
launch
DESTINATION share/${PROJECT_NAME}/
)
ament_package()