Trigger fails to start job

We have a trigger that starts 1 process every 15 mins allocated on 3 bots. This trigger on some days have not started job every 15 mins. Instead on random basis, for some hours it was starting job every 1 hour.

I looked at robot event log, there i can see error.

Log Name: Application
Source:        UiPath
Date:          6/25/2020 5:00:25 PM
Event ID:      0
Task Category: None
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      nhseandivm2
Description:
UiPath.Service.Host 19.10.4.0 
InvokeAsync: System.IO.IOException: Pipe is broken.
   at System.IO.Pipes.PipeStream.WinIOError(Int32 errorCode)
   at System.IO.Pipes.PipeStream.EndWrite(IAsyncResult asyncResult)
   at System.IO.Stream.<>c.<BeginEndWriteAsync>b__53_1(Stream stream, IAsyncResult asyncResult)
   at System.Threading.Tasks.TaskFactory`1.FromAsyncTrimPromise`1.Complete(TInstance thisRef, Func`3 endMethod, IAsyncResult asyncResult, Boolean requiresSynchronization)
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at UiPath.Ipc.IOHelpers.<WriteMessage>d__13.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at UiPath.Ipc.Connection.<SendMessage>d__26.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Nito.AsyncEx.TaskExtensions.<DoWaitAsync>d__1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at UiPath.Ipc.ServiceClient`1.<>c__DisplayClass17_0`1.<<InvokeAsync>b__3>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at UiPath.Ipc.IOHelpers.<WithResult>d__6.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at UiPath.Ipc.IOHelpers.<WithTimeout>d__11`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at UiPath.Ipc.ServiceClient`1.<>c__DisplayClass17_0`1.<InvokeAsync>b__4(Exception ex)
   at UiPath.Ipc.IOHelpers.<WithTimeout>d__11`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at UiPath.Ipc.ServiceClient`1.<>c__DisplayClass17_0`1.<<InvokeAsync>b__2>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at UiPath.Ipc.ServiceClient`1.<InvokeAsync>d__17`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at UiPath.Service.Impl.ClientWrapper`1.<InvokeAsync>d__8.MoveNext(), HResult -2147024787
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="UiPath" />
    <EventID Qualifiers="0">0</EventID>
    <Level>2</Level>
    <Task>0</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2020-06-25T17:00:25.653597000Z" />
    <EventRecordID>11292</EventRecordID>
    <Channel>Application</Channel>
    <Computer>nhseandivm2</Computer>
    <Security />
  </System>
  <EventData>
    <Data>UiPath.Service.Host 19.10.4.0 
InvokeAsync: System.IO.IOException: Pipe is broken.
   at System.IO.Pipes.PipeStream.WinIOError(Int32 errorCode)
   at System.IO.Pipes.PipeStream.EndWrite(IAsyncResult asyncResult)
   at System.IO.Stream.&lt;&gt;c.&lt;BeginEndWriteAsync&gt;b__53_1(Stream stream, IAsyncResult asyncResult)
   at System.Threading.Tasks.TaskFactory`1.FromAsyncTrimPromise`1.Complete(TInstance thisRef, Func`3 endMethod, IAsyncResult asyncResult, Boolean requiresSynchronization)
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at UiPath.Ipc.IOHelpers.&lt;WriteMessage&gt;d__13.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at UiPath.Ipc.Connection.&lt;SendMessage&gt;d__26.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Nito.AsyncEx.TaskExtensions.&lt;DoWaitAsync&gt;d__1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at UiPath.Ipc.ServiceClient`1.&lt;&gt;c__DisplayClass17_0`1.&lt;&lt;InvokeAsync&gt;b__3&gt;d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at UiPath.Ipc.IOHelpers.&lt;WithResult&gt;d__6.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at UiPath.Ipc.IOHelpers.&lt;WithTimeout&gt;d__11`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at UiPath.Ipc.ServiceClient`1.&lt;&gt;c__DisplayClass17_0`1.&lt;InvokeAsync&gt;b__4(Exception ex)
   at UiPath.Ipc.IOHelpers.&lt;WithTimeout&gt;d__11`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at UiPath.Ipc.ServiceClient`1.&lt;&gt;c__DisplayClass17_0`1.&lt;&lt;InvokeAsync&gt;b__2&gt;d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at UiPath.Ipc.ServiceClient`1.&lt;InvokeAsync&gt;d__17`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at UiPath.Service.Impl.ClientWrapper`1.&lt;InvokeAsync&gt;d__8.MoveNext(), HResult -2147024787</Data>
  </EventData>

Note : On click of view jobs in trigger, it does not show trigger created every 15 mins for 2 or 3 days only for some hours in between. Otherwise it works fine.

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