# Revision history [back]

Hello,

I know this question has been asked many times for single robot but i cannot figure it out for my multi-robot-system. Please Note: It is perfectly working for a single robot. But it is giving the error below when launching multiple robots.

    No laser scan received (and thus no pose updates have been published) for 18.505000 seconds.  Verify that data is being published on the /plato1/scan topic.
[ WARN] [1544187859.336072043, 18.505000000]: MessageFilter [target=odom ]: Dropped 100.00% of messages so far. Please turn the [ros.amcl.message_notifier] rosconsole logger to DEBUG for more information.
[ WARN] [1544187859.350568657, 18.515000000]: No laser scan received (and thus no pose updates have been published) for 18.515000 seconds.  Verify that data is being published on the /plato2/scan topic.
[ WARN] [1544187859.350708006, 18.515000000]: MessageFilter [target=odom ]: Dropped 100.00% of messages so far. Please turn the [ros.amcl.message_notifier] rosconsole logger to DEBUG for more information.


Now, the problem is that data is being published on the topics (/plato1/scan and /plato2/scan). But somehow this error is causing me problems.((

Hello,

I know this question has been asked many times for single robot but i cannot figure it out for my multi-robot-system. Please Note: It is perfectly working for a single robot. But it is giving the error below when launching multiple robots.

    No laser scan received (and thus no pose updates have been published) for 18.505000 seconds.  Verify that data is being published on the /plato1/scan topic.
[ WARN] [1544187859.336072043, 18.505000000]: MessageFilter [target=odom ]: Dropped 100.00% of messages so far. Please turn the [ros.amcl.message_notifier] rosconsole logger to DEBUG for more information.
[ WARN] [1544187859.350568657, 18.515000000]: No laser scan received (and thus no pose updates have been published) for 18.515000 seconds.  Verify that data is being published on the /plato2/scan topic.
[ WARN] [1544187859.350708006, 18.515000000]: MessageFilter [target=odom ]: Dropped 100.00% of messages so far. Please turn the [ros.amcl.message_notifier] rosconsole logger to DEBUG for more information.


Now, the problem is that data is being published on the topics (/plato1/scan and /plato2/scan). But somehow this error is causing me problems.((

I am running it in Gazebo simulation.

Hello,

I know this question has been asked many times for single robot but i cannot figure it out for my multi-robot-system. Please Note: It is perfectly working for a single robot. But it is giving the error below when launching multiple robots.

    No laser scan received (and thus no pose updates have been published) for 18.505000 seconds.  Verify that data is being published on the /plato1/scan topic.
[ WARN] [1544187859.336072043, 18.505000000]: MessageFilter [target=odom ]: Dropped 100.00% of messages so far. Please turn the [ros.amcl.message_notifier] rosconsole logger to DEBUG for more information.
[ WARN] [1544187859.350568657, 18.515000000]: No laser scan received (and thus no pose updates have been published) for 18.515000 seconds.  Verify that data is being published on the /plato2/scan topic.
[ WARN] [1544187859.350708006, 18.515000000]: MessageFilter [target=odom ]: Dropped 100.00% of messages so far. Please turn the [ros.amcl.message_notifier] rosconsole logger to DEBUG for more information.


Now, the problem is that data is being published on the topics (/plato1/scan and /plato2/scan). But somehow this error is causing me problems.((problems.

I am running it in Gazebo simulation.

(((Below is the pdf file of the tf tree. Please remove the .jpg from end to review. It is a pdf file)))

C:\fakepath\frames.pdf.jpg

Hello,

I know this question has been asked many times for single robot but i cannot figure it out for my multi-robot-system. Please Note: It is perfectly working for a single robot. But it is giving the error below when launching multiple robots.

    No laser scan received (and thus no pose updates have been published) for 18.505000 seconds.  Verify that data is being published on the /plato1/scan topic.
[ WARN] [1544187859.336072043, 18.505000000]: MessageFilter [target=odom ]: Dropped 100.00% of messages so far. Please turn the [ros.amcl.message_notifier] rosconsole logger to DEBUG for more information.
[ WARN] [1544187859.350568657, 18.515000000]: No laser scan received (and thus no pose updates have been published) for 18.515000 seconds.  Verify that data is being published on the /plato2/scan topic.
[ WARN] [1544187859.350708006, 18.515000000]: MessageFilter [target=odom ]: Dropped 100.00% of messages so far. Please turn the [ros.amcl.message_notifier] rosconsole logger to DEBUG for more information.


Now, the problem is that data is being published on the topics (/plato1/scan and /plato2/scan). But somehow this error is causing me problems.

I am running it in Gazebo simulation.

(((Below is the pdf file of the tf tree. Please remove the .jpg from end to review. It is a pdf file)))