About using hector_slam can not display the map problem

[ju-mingyue]

Hello, I encountered the problem that the map cannot be displayed when building the map when using sick nano3 lidar and nano3 ros package. Below is the file I configured: Start hector_slam as follows:

mapping_default.launch is as follows: `

`  But when I run it, the result is as shown in the figure below:   

[ju-mingyue]

@strecksen Hello, do you have a solution to the above problem? Looking forward to your help.