# Tms service failed to load

**URL:** <https://community.cesium.com/t/tms-service-failed-to-load/22824>\
**Category:** Cesium for Unity\
**Created:** [March 12, 2023, 9:53am UTC](https://community.cesium.com/t/tms-service-failed-to-load/22824 "2023-03-12T09:53:15Z")\
**Posts on this page:** 1\
**Showing post:** 8

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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:** [March 14, 2023, 6:49am UTC](https://community.cesium.com/t/tms-service-failed-to-load/22824/8 "2023-03-14T06:49:17Z")

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Looks like you have the same problem as the poster in this thread:

> [@When update Cesium for Unreal,the offline data is no useful](https://community.cesium.com/t/when-update-cesium-for-unreal-the-offline-data-is-no-useful/22834):
>
> this is data: .xml \<TileMap TileMapservice="http://tms.osgeo.org/1.0.0" version="1.0.0"\> \<Title\>china-15\</Title\> \<abstract\>WeMap Export TMS\</abstract\> \<SRS\>EPSG:4326\</SRS\> \<vSRS/\> \<BoundingBox minx="73.476562500" miny="3.581542969" maxx="135.109863281" maxy="53.569335938"/\> \<Origin x="73.476562500" y="3.581542969"/\> \<TileFormat extension="png" mime-type="image/png" width="256" height="256"/\> \<TileSets profile="global-geodetic"\> \<TileSet href="" order="0" units-per-pixel="0.703125000"…

Your tilesets have a blank `href` property, so Cesium doesn’t know where to find the tiles. It’s fine for that attribute to be missing entirely (in which case Cesium will use the `order` field as the relative URL), but if it’s present it has to be valid (not blank).

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_[View the full topic](https://community.cesium.com/t/tms-service-failed-to-load/22824)._