Hi, I am unable to complete catkin_make & getting make-j4-l4 error

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Base path: /home/gokul/catkin_ws
Source space: /home/gokul/catkin_ws/src
Build space: /home/gokul/catkin_ws/build
Devel space: /home/gokul/catkin_ws/devel
Install space: /home/gokul/catkin_ws/install
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#### Running command: "make cmake_check_build_system" in "/home/gokul/catkin_ws/build"
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#### Running command: "make -j4 -l4" in "/home/gokul/catkin_ws/build"
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make[2]: *** No rule to make target 'ros1/CMakeFiles/try.dir/build'.  Stop.
CMakeFiles/Makefile2:449: recipe for target 'ros1/CMakeFiles/try.dir/all' failed
make[1]: *** [ros1/CMakeFiles/try.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
[ 50%] Built target listener
[100%] Built target talker
Makefile:140: recipe for target 'all' failed
make: *** [all] Error 2
Invoking "make -j4 -l4" failed