При тестировании периодически возникает:System.NullReferenceException: Object reference not set to an instance of an object. at #=qkoSo$d923scmg_sYtLvcgC1T0ft2pstJcPersksBoZKwr0BQW4jZhfAQW1xMmBut.#=qg67115AckIhO5d2zxyCZAQ==(Boolean #=qLADmQb8cJ4Y_nd7XlXaXQw==) at #=qkoSo$d923scmg_sYtLvcgC1T0ft2pstJcPersksBoZKwr0BQW4jZhfAQW1xMmBut.#=qm3V9Kfo72M8TE2px_zLo9xQM1RL6SFBGqLB3If2f6Fw=.#=qPPbjei2wiECkz_QeThbm2A5qP5NSKd6ArG8wtLmBsyA=() at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) at System.Threading.TimerQueueTimer.CallCallback() at System.Threading.TimerQueueTimer.Fire() at System.Threading.TimerQueue.FireNextTimers()