I am currently doing a project using ros melodic and vrep. When I execute
$ roslaunch all.launch
it returns
... logging to /home/carl/.ros/log/1f5d5682-11c6-11ea-8e21-0cdd24b1a0ad/roslaunch-carl-IdeaPad-L340-15IRH-Gaming-21116.log
Checking log directory for disk usage. This may take awhile. Press Ctrl-C to interrupt Done checking log file disk usage. Usage is <1GB.
Resource not found: opencv_detector
ROS path [0]=/opt/ros/melodic/share/ros
ROS path [1]=/home/carl/catkin_ws/src
ROS path [2]=/opt/ros/melodic/share
The traceback for the exception was written to the log file
and I am unable to solve it. Can someone please help me?