Coordinate setting issues on the CARLA large map

[ChengYaoJie]

Hello, I'm trying to tile a map I created according to the description in this document: https://carla.readthedocs.io/en/0.9.15/content_authoring_large_maps/, which describes how to tile a large map exported from RoadRunner and import it into CARLA.
I created a simple map file (2669m x 2187m), which can be opened in Blender, a 3D modeling software. Importing the complete map into CARLA also yielded no errors, and the Python example automatic_control.py provided in CARLA can also be run, as shown in the image below:

Then, following a similar approach to RoadRunner, I customized the map into tiles in Blender, with each tile being 1 kilometer in size (the four tile boundaries are marked by the point (0, 0)). The tiled effect is shown in Blender as follows:

After correctly naming each block according to the documentation and importing it, a block map appeared in the level, as shown in the image below.

However, an error has occurred. When clicking on the main level map, the various map sections are quite far apart, as shown in the image below. Could someone please help me and tell me where the problem might be? I would be very grateful!