Symptoms:
- I am trying to upload my project to Unity Play, but I keep getting the error "Invalid Parameter".
Cause:
The error “Invalid Parameter” means there’s no WebGL Build in the .zip file you are trying to upload. Unity Play only accepts WebGL Build .zip files.
Resolution:
In order to upload your project to Unity Play, you need to create a WebGL build.
For the full steps on how to create a WebGL build, see the Unity Learn tutorial "How to publish for WebGL".
More Information: