[ WARN] [1596213182.191665690]: No laser scan received (and thus no pose updates have been published) for 1596213182.191527 seconds. Verify that data is being published on the /scan topic.

melodic
2d_navigation

asked 2020-08-01 13:15:49 -0500

Raza Jafri
16 ●1 ●2 ●2

Hi, I am using ROS melodic on raspberry pi 4 with Ubuntu 18.04 OS. I am receiving the error of "no laser scan received" when i launch the amcl_diff.launch file. However, the amcl file is recieving data from "Laser Scan" topic. Everything seems to be working properly in the rqt_graph but the map is not linked to any node which seems odd. I added the map server node in the amcl launch file but all in vain.
Due to less points, I am unable to upload the image of rqt_graph so below is the drive link containing the image. https://drive.google.com/file/d/1cvOb...

Any help regarding this will be highly appreciated.

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[ WARN] [1596213182.191665690]: No laser scan received (and thus no pose updates have been published) for 1596213182.191527 seconds. Verify that data is being published on the /scan topic.

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[ WARN] [1596213182.191665690]: No laser scan received (and thus no pose updates have been published) for 1596213182.191527 seconds. Verify that data is being published on the /scan topic. edit

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[ WARN] [1596213182.191665690]: No laser scan received (and thus no pose updates have been published) for 1596213182.191527 seconds. Verify that data is being published on the /scan topic.