# Multiple Issues when using Google tileset

**URL:** <https://community.cesium.com/t/multiple-issues-when-using-google-tileset/24314>\
**Category:** Cesium for Unity\
**Created:** [May 26, 2023, 4:39am UTC](https://community.cesium.com/t/multiple-issues-when-using-google-tileset/24314 "2023-05-26T04:39:23Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ozhanghe](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/ozhanghe/32/12424_2.png) [@ozhanghe](https://community.cesium.com/u/ozhanghe)\
**Post date:** [May 26, 2023, 4:39am UTC](https://community.cesium.com/t/multiple-issues-when-using-google-tileset/24314/1 "2023-05-26T04:39:23Z")

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When using the Google Photorealistic 3D tiles, there are very clear seams between tiles and when trying to generate physics meshes, Unity outputs an error:  
“” mesh must have at least three distinct vertices to be a valid collision mesh.

Screenshots:

 ![Screenshot from 2023-05-25 21-38-56](https://global.discourse-cdn.com/cesium/original/2X/1/128e2cc80d0c08e8150f45645e865b4a99a3ab1e.png)  
 ![Screenshot from 2023-05-25 21-39-07](https://global.discourse-cdn.com/cesium/original/2X/7/71d0281703b1fec0c339b83ed4056b44498ed8af.png)

If there is any fix, please notify me.

Thanks,  
Oliver

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**Author:** ![Kevin\_Ring](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/kevin_ring/32/2003_2.png) [@Kevin\_Ring](https://community.cesium.com/u/Kevin_Ring)\
**Post date:** [May 26, 2023, 6:10am UTC](https://community.cesium.com/t/multiple-issues-when-using-google-tileset/24314/2 "2023-05-26T06:10:04Z")

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What version of Cesium for Unity are you using? I believe we fixed the problem with the physics meshes in v1.1.0. The latest is v1.2.0.