运行崩溃

[yccshh]

访问 http://127.0.0.1:1272 进入程序界面
Unhandled exception. System.NullReferenceException: Object reference not set to an instance of an object.
at ChpStmScraper.Program.<>c__DisplayClass4_1.<.ctor>b__2(Object state) in /home/runner/work/CheapSteam/CheapSteam/ChpStmScraper/Program.cs:line 73
at System.Threading.QueueUserWorkItemCallback.<>c.<.cctor>b__6_0(QueueUserWorkItemCallback quwi)
at System.Threading.ExecutionContext.RunForThreadPoolUnsafe[TState](ExecutionContext executionContext, Action`1 callback, TState& state)
at System.Threading.QueueUserWorkItemCallback.Execute()
at System.Threading.ThreadPoolWorkQueue.Dispatch()
at System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart()
at System.Threading.Thread.StartCallback()