I use Visual Studio 2019 for coding. I have been it till now for codeforces. But from yesterday whenever I am uploading my source file it shows this error. Can anyone help me fix this. Thank You.

Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio Version 16
VisualStudioVersion = 16.0.31321.278
MinimumVisualStudioVersion = 10.0.40219.1
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "test", "test\test.vcxproj", "{6C54A1FC-6190-4E26-B1BF-F567058944CF}"
EndProject


Global
	GlobalSection(SolutionConfigurationPlatforms) = preSolution
		Debug|x64 = Debug|x64
		Debug|x86 = Debug|x86
		Release|x64 = Release|x64
		Release|x86 = Release|x86
	EndGlobalSection
	GlobalSection(ProjectConfigurationPlatforms) = postSolution
		{6C54A1FC-6190-4E26-B1BF-F567058944CF}.Debug|x64.ActiveCfg = Debug|x64
		{6C54A1FC-6190-4E26-B1BF-F567058944CF}.Debug|x64.Build.0 = Debug|x64
		{6C54A1FC-6190-4E26-B1BF-F567058944CF}.Debug|x86.ActiveCfg = Debug|Win32
		{6C54A1FC-6190-4E26-B1BF-F567058944CF}.Debug|x86.Build.0 = Debug|Win32
		{6C54A1FC-6190-4E26-B1BF-F567058944CF}.Release|x64.ActiveCfg = Release|x64
		{6C54A1FC-6190-4E26-B1BF-F567058944CF}.Release|x64.Build.0 = Release|x64
		{6C54A1FC-6190-4E26-B1BF-F567058944CF}.Release|x86.ActiveCfg = Release|Win32
		{6C54A1FC-6190-4E26-B1BF-F567058944CF}.Release|x86.Build.0 = Release|Win32
	EndGlobalSection
	GlobalSection(SolutionProperties) = preSolution
		HideSolutionNode = FALSE
	EndGlobalSection
	GlobalSection(ExtensibilityGlobals) = postSolution
		SolutionGuid = {3B3C5184-DF9A-4834-A3AB-7986C56EB7DF}
	EndGlobalSection
EndGlobal