Rviz Status Warn: Scale of 0 in one of x/y/z

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Hi,

I am getting a status warning message in Rviz.

Although the scale of markers are not 0, I keep getting the status warn in Rviz saying "Scale of 0 in one of x/y/z".

I set the markers to be

a.pose.position.x = lon_position;
a.pose.position.y = lateral_position;
a.pose.position.z = 0;
a.pose.orientation.x = 0.0;
a.pose.orientation.y = 0.0;
a.pose.orientation.z = 0.0;
a.pose.orientation.w = 0.0;
a.scale.x = 2;
a.scale.y = 2;
a.scale.z = 2;
a.color.r = 0.0;
a.color.g = 0.0;
a.color.b = 1.0;
a.color.a = 1.0;

I will appreciate any kind of help regarding this.

Thank you.