Drawing a map with geojson

1. A concise explanation of the problem you’re experiencing.

I want to erase the attached line.
Please tell me how to resolve.

Drawing method: geojson

Cesium version:1.51

You may need to change the default arcType as described in this issue: https://github.com/AnalyticalGraphicsInc/cesium/issues/8042

Let me know if this helps.

Thanks Omar! That fixed the problem!!