Update the project to 2019.3.0a10.

Packages/manifest.json

 {
   "dependencies": {
-    "com.unity.package-manager-ui": "2.0.3",
+    "com.unity.2d.sprite": "1.0.0",
+    "com.unity.2d.tilemap": "1.0.0",
+    "com.unity.ide.rider": "1.0.8",
+    "com.unity.ide.visualstudio": "1.0.11",
+    "com.unity.ide.vscode": "1.0.7",
+    "com.unity.multiplayer-hlapi": "1.0.4",
+    "com.unity.test-framework": "1.0.16",
+    "com.unity.timeline": "1.1.0",
+    "com.unity.ugui": "1.0.0",
+    "com.unity.xr.legacyinputhelpers": "2.0.4",
     "com.unity.modules.ai": "1.0.0",
+    "com.unity.modules.androidjni": "1.0.0",
     "com.unity.modules.animation": "1.0.0",
     "com.unity.modules.assetbundle": "1.0.0",
     "com.unity.modules.audio": "1.0.0",

ProjectSettings/ProjectVersion.txt

-m_EditorVersion: 2018.3.0f2
+m_EditorVersion: 2019.3.0a10
+m_EditorVersionWithRevision: 2019.3.0a10 (d046aa12c0d7)

ProjectSettings/XRSettings.asset

+{
+    "m_SettingKeys": [
+        "VR Device Disabled",
+        "VR Device User Alert"
+    ],
+    "m_SettingValues": [
+        "False",
+        "False"
+    ]
+}
\ No newline at end of file