Add all this to your manifest.json inside Package folder (root project folder) before adding package.
"com.cysharp.unitask": "https://github.com/uta-org/UniTask.git?path=src/UniTask/Assets/Plugins/UniTask",
"org.nuget.voltrpc": "3.0.0",
"org.nuget.voltrpc.extension.memory": "1.1.0",
"org.nuget.voltrpc.extension.vectors": "1.1.0",
"dev.voltstro.nativearrayspanextensions": "https://github.com/Voltstro-Studios/NativeArraySpanExtensions.git",
"dev.voltstro.unitywebbrowser": "https://github.com/uta-org/UnityWebBrowser.git?path=src/Packages/UnityWebBrowser",
"dev.voltstro.unitywebbrowser.engine.cef": "https://github.com/uta-org/UnityWebBrowser.git?path=src/Packages/UnityWebBrowser.Engine.Cef",
"dev.z3nth10n.unitywebbrowser.engine.cef.win.x64": "https://github.com/uta-org/UnityWebBrowser-Win64.git",
"com.unity.editorcoroutines": "1.0.0",
"com.unity.inputsystem": "1.4.2",
"dev.z3nth10n.unitywebbrowser.dependencies": "https://github.com/uta-org/UnityWebBrowser-Dependencies.git",
Then, you can add this git package on the package manager window: https://github.com/uta-org/UnityWebBrowser-Editor.git?path=dev.z3nth10n.unitywebbrowser.editor
Also, you must add scopedRegistries to your manifest.json:
"scopedRegistries": [
{
"name": "Unity NuGet",
"url": "https://unitynuget-registry.azurewebsites.net",
"scopes": [
"org.nuget"
]
}
]
"dev.z3nth10n.unitywebbrowser.editor": "file:../../Packages/dev.z3nth10n.unitywebbrowser.editor",