NuGet package restore failure

After code migration in bit bucket facing issue to build the solution in visual studio .

Error:Severity Code Description Project File Line Suppression State

Error The command ""C:...nuget\nuget.exe" restore C:\Users..\packages.config -RequireConsent -solutionDir C:\Users.." exited with code 1.

Severity Code Description Project File Line Suppression StateError restore: invalid arguments. M5Mantle.Tests

Tried :cleaning nuget cache ,update solution package ,allowed automatic download of nuget package .

any alternative approach I can look into to resolve the issue .