Had the same situation here, and making all folders and files writable in …\UE_5.5\Engine\Source\Programs\AutomationTool\Mutable\RunMutableCommandlet\obj fixed the problem. For me, this happened because I updated the NuGet packages to the next approach version (e.g., 4.0.0 to 4.0.1). VS Community 2022 was showing a warning in the Solution Manager that some packages were vulnerable.