.msg files not created after catkin_make for an action

edit

I am using ROS melodic on python2.7 in anaconda env. My Custom message and custom service functions are working properly.

I have two folders one is: catkin_ws/src/ my_robot_tutorials which contains scripts in which there are .py executable files. my_robot_msgs: this contains all my header files like srv, action, and msg.

I have created an action folder inside catkin_ws/src/my_robot_msgs/action/SampleAction1.msg which contains:

string goal_message         
---
string result_message         
---
string feedback_message

catkin_ws/src/my_robot_msgs/CMakeList.txt

my CMakeLists.txt contains:

find_package(catkin REQUIRED COMPONENTS
  roscpp
  rospy
  std_msgs
  message_generation
  actionlib_msgs
)

 add_message_files(
   FILES
   HardwareStatus.msg
   RocketStatusCheck.msg 
)

## Generate services in the 'srv' folder

 add_service_files(
   FILES
   ComputeDiskArea.srv   
)


## Generate actions in the 'action' folder

 add_action_files(
  FILES
  SampleAction1.action
)

## Generate added messages and services with any dependencies listed here


 generate_messages(
   DEPENDENCIES
   std_msgs
   actionlib_msgs
)


catkin_package(
  #INCLUDE_DIRS include
  #LIBRARIES my_robot_msgs
  CATKIN_DEPENDS roscpp rospy std_msgs message_runtime actionlib_msgs
  #DEPENDS system_lib
)

my package catkin_ws/src/my_robot_msgs/package.xml contains:

  <buildtool_depend>catkin</buildtool_depend>
  <build_depend>roscpp</build_depend>
  <build_depend>rospy</build_depend>
  <build_depend>std_msgs</build_depend>
  <build_depend>message_generation</build_depend>
  <build_export_depend>roscpp</build_export_depend>
  <build_export_depend>rospy</build_export_depend>
  <build_export_depend>std_msgs</build_export_depend>
  <exec_depend>roscpp</exec_depend>
  <exec_depend>rospy</exec_depend>
  <exec_depend>std_msgs</exec_depend>
  <exec_depend>message_runtime</exec_depend>

  <build_depend>actionlib</build_depend>
  <build_depend>actionlib_msgs</build_depend>
  <exec_depend>actionlib</exec_depend>
  <exec_depend>actionlib_msgs</exec_depend>

my catkin_ws/src/my_robot_tutorials/CMakeLists.txt

find_package(catkin REQUIRED COMPONENTS
  roscpp
  rospy
  std_msgs
  std_srvs
  rospy_tutorials
  my_robot_msgs
  actionlib_msgs 
  actionlib
)

my catkin_ws/src/my_robot_tutorials/package.xml

 <buildtool_depend>catkin</buildtool_depend>
  <build_depend>roscpp</build_depend>
  <build_depend>rospy</build_depend>
  <build_depend>std_msgs</build_depend>
  <build_export_depend>roscpp</build_export_depend>
  <build_export_depend>rospy</build_export_depend>
  <build_export_depend>std_msgs</build_export_depend>
  <exec_depend>roscpp</exec_depend>
  <exec_depend>rospy</exec_depend>
  <exec_depend>std_msgs</exec_depend>

  <build_depend>actionlib</build_depend>
  <build_depend>actionlib_msgs</build_depend>
  <exec_depend>actionlib</exec_depend>
  <exec_depend>actionlib_msgs</exec_depend>

  <depend>my_robot_msgs</depend>

After catkin_make and source devel/setup.bash

I cannot find any .msg files generated in the catkin_ws/src/my_robot_msgs/msg/ folder. Can anyone point out any bugs/ ideas which I can try to make ROS generate .msg file.