How to solve this importError, cannot import name (SingleArmManipulator) from (omni.isaac.core.robots)?

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Hi,

There is no SingleArmManipulator in omni.isaac.core.robots (refer to the API documentation here).

You may refer to the examples here for adding a manipulator robot.

Sir, I follow (Use the Pick and Place Task). But nothing happened in Omniverse. How to solve this?

It simply defines the application Class. You need to create and run the application to see things. Follow through the Hello World and the Hello Robot tutorials to find out how to do so.

You may also refer to the source code of the Bin Filling example.