The file '/home/ubuntu/actions-runner/_work' already exists.

System.NullReferenceException: Object reference not set to an instance of an object. at GitHub.Runner.Worker.JobRunner.CompleteJobAsync(IJobServer jobServer, IExecutionContext jobContext, AgentJobRequestMessage message, Nullable`1 taskResult) at GitHub.Runner.Worker.JobRunner.CompleteJobAsync(IRunnerService server, IExecutionContext jobContext, AgentJobRequestMessage message, Nullable`1 taskResult) at GitHub.Runner.Worker.JobRunner.RunAsync(AgentJobRequestMessage message, CancellationToken jobRequestCancellationToken) at GitHub.Runner.Worker.JobRunner.RunAsync(AgentJobRequestMessage message, CancellationToken jobRequestCancellationToken) at GitHub.Runner.Worker.Worker.RunAsync(String pipeIn, String pipeOut) at GitHub.Runner.Worker.Program.MainAsync(IHostContext context, String[] args)