No module named my_custom_srv_msg_pkg.srv how to resolve this error?

[miryalkar.ashish1234]

i’ve created a srv file called MyCustomServiceMessage.srv in srv folder of my_custom_srv_msg_pkg package.
i didn’t get any error during execution of source devel/setup.bash and catkin_make steps.
can you please tell me what’s going wrong with my code when i tried to import the above srv from the line
from my_custom_srv_msg_pkg.srv import MyCustomServiceMessage,
MyCustomServiceMessageResponse.
I also tried deleting the build folder from catkin_ws and rebuilding it.
still its not working.

[bayodesegun]

@miryalkar.ashish1234,

Just like your other question, I think it should be something in the message creation process, as mentioned in the post below:

ERROR: Cannot load message class for [package/Message]. Are your messages built?

This error usually happens when you create a custom ROS message. SOLUTION: Please check the following in order. Painfully , #3 is a common and repeated cause, and it tends to happen even if you already know about it! Have you made the necessary and correct modifications to your CMakeLists.txt (and, where required, package.xml) file after creating the message file? You can find instructions on how to do this in the relevant section of the notebook describing how to create custo…

[miryalkar.ashish1234]

I also tried br creating a new package, but still not able to resolve it, can you please look into my code and let me know where i’m going wrong?
Its been very long and I tried everyting i can, but cant figure what the actual problem is.
Thanks!!

[miryalkar.ashish1234]

After typing source devel/setup.bash in every shell errors got resolved.
Thanks.