when i click build and run button, it gives following 4 errors.

i am building a simple VR game using unity 2019.1.2f1.game is running well on laptop. i have to run it on android.when i click build and run button, it gives following 4 errors. where am i wrong. kindly correct!,i am building a simple VR game in unity. everytime i click build and run it gives following errors: FormatException: Input string was not in a correct format. System.Number.StringToNumber (System.String str, System.Globalization.NumberStyles options, System.Number+NumberBuffer& number, System.Globalization.NumberFormatInfo info, System.Boolean parseDecimal) (at :0) System.Number.ParseInt32 (System.String s, System.Globalization.NumberStyles style, System.Globalization.NumberFormatInfo info) (at :0) System.Int32.Parse (System.String s, System.IFormatProvider provider) (at :0) System.Convert.ToInt32 (System.String value) (at :0) UnityEditor.Android.AndroidDeviceInfo.get_SDKVersion () (at :0) UnityEditor.Android.AndroidDeviceInfo.HasSDKSupport (System.Int32 minimumVersion) (at :0) UnityEditor.Android.AndroidDeploymentTargetsExtension+AndroidDeploymentTargetInfo.CheckTargetInternal (UnityEditor.Android.AndroidDeploymentTargetRequirements targetRequirements) (at :0) UnityEditor.Android.AndroidDeploymentTargetsExtension+AndroidDeploymentTargetInfo.CheckTarget (UnityEditor.DeploymentTargetRequirements targetRequirements) (at :0) UnityEditor.Android.PostProcessor.Tasks.CheckDevice.FindCompatibleDevices (UnityEditor.Android.AndroidDeploymentTargetRequirements targetRequirements, UnityEditor.DeploymentTargets.DeploymentTargetId targetId, System.Collections.Generic.List`1[T] knownDevices, System.Collections.Generic.List`1[UnityEditor.Android.PostProcessor.Tasks.CheckDevice+DeviceInfo]& compatibleDevices) (at :0) UnityEditor.Android.PostProcessor.Tasks.CheckDevice.GetTargetDevices (UnityEditor.Android.ADB adb) (at :0) UnityEditor.Android.PostProcessor.Tasks.CheckDevice.Execute (UnityEditor.Android.PostProcessor.PostProcessorContext context) (at :0) UnityEditor.Android.PostProcessor.PostProcessRunner.RunAllTasks (UnityEditor.Android.PostProcessor.PostProcessorContext context) (at :0) UnityEditor.Android.PostProcessAndroidPlayer.PrepareForBuild (UnityEditor.BuildOptions options, UnityEditor.BuildTarget target) (at :0) UnityEditor.Android.AndroidBuildPostprocessor.PrepareForBuild (UnityEditor.BuildOptions options, UnityEditor.BuildTarget target) (at :0) UnityEditor.PostprocessBuildPlayer.PrepareForBuild (UnityEditor.BuildOptions options, UnityEditor.BuildTargetGroup targetGroup, UnityEditor.BuildTarget target) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/PostprocessBuildPlayer.cs:106) UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)

Error building Player: FormatException: Input string was not in a correct format.

Build completed with a result of 'Failed' UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)

UnityEditor.BuildPlayerWindow+BuildMethodException: 2 errors at UnityEditor.BuildPlayerWindow+DefaultBuildMethods.BuildPlayer (UnityEditor.BuildPlayerOptions options) [0x00242] in C:\buildslave\unity\build\Editor\Mono\BuildPlayerWindowBuildMethods.cs:194 at UnityEditor.BuildPlayerWindow.CallBuildMethods (System.Boolean askForBuildLocation, UnityEditor.BuildOptions defaultBuildOptions) [0x0007f] in C:\buildslave\unity\build\Editor\Mono\BuildPlayerWindowBuildMethods.cs:97 UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)