cgravill
commented
5 years ago I'm not aware of people using F# with JupyterLab but it would be great if was made possible. I took a quick look and, for me, there's a more detailed exception which is likely to be involved in your restarts:
Unhandled Exception: Newtonsoft.Json.JsonReaderException: Unexpected character encountered while parsing value: [. Path 'deletedCells', line 1, position 17.
at Newtonsoft.Json.JsonTextReader.ReadStringValue(ReadType readType)
at Newtonsoft.Json.JsonTextReader.ReadAsString()
at Newtonsoft.Json.JsonReader.ReadForType(JsonContract contract, Boolean hasConverter)
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateDictionary(IDictionary dictionary, JsonReader reader, JsonDictionaryContract contract, JsonProperty containerProperty, String id)
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateObject(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(JsonReader reader, Type objectType, Boolean checkAdditionalContent)
at Newtonsoft.Json.JsonSerializer.DeserializeInternal(JsonReader reader, Type objectType)
at Newtonsoft.Json.JsonConvert.DeserializeObject(String value, Type type, JsonSerializerSettings settings)
at Newtonsoft.Json.JsonConvert.DeserializeObject[T](String value, JsonSerializerSettings settings)
at IfSharp.Kernel.IfSharpKernel.deserializeDict(String str) in E:\dev\IfSharp\src\IfSharp.Kernel\Kernel.fs:line 109
at IfSharp.Kernel.IfSharpKernel.recvMessage(NetMQSocket socket) in E:\dev\IfSharp\src\IfSharp.Kernel\Kernel.fs:line 154
at <StartupCode$IfSharp-Kernel>.$Kernel.msg@610.Invoke(NetMQSocket socket) in E:\dev\IfSharp\src\IfSharp.Kernel\Kernel.fs:line 610
at IfSharp.Kernel.IfSharpKernel.doShell() in E:\dev\IfSharp\src\IfSharp.Kernel\Kernel.fs:line 610
at <StartupCode$IfSharp-Kernel>.$Kernel.StartAsync@705.Invoke(Unit unitVar) in E:\dev\IfSharp\src\IfSharp.Kernel\Kernel.fs:line 705
at Microsoft.FSharp.Control.AsyncPrimitives.CallThenInvoke[T,TResult](AsyncActivation`1 ctxt, TResult result1, FSharpFunc`2 part2)
at Microsoft.FSharp.Control.Trampoline.Execute(FSharpFunc`2 firstAction)
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at Microsoft.FSharp.Control.AsyncPrimitives.Start@938-1.Invoke(ExceptionDispatchInfo edi)
at Microsoft.FSharp.Control.Trampoline.Execute(FSharpFunc`2 firstAction)
at <StartupCode$FSharp-Core>.$Async.-ctor@167-1.Invoke(Object o)
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.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()
at System.Threading.ThreadPoolWorkQueue.Dispatch()What that suggests is there's new or adjusted messages in a JupyterLab context that would need responding to. It's probably a case of comparing the current protocol for Jupyter notebooks and Jupyter labs and figuring out what's new, then implementing that.
Bob-McCrory
xjose97x
Just installed JupyterLab. When I try to run an F#/Jupyter notebook that works in Jupyter, it hangs in JupyterLab, getting stuck and showing the error message in the .png below over and over.
Has IFSharp been tested on JupyterLab yet? Is there anything I can do to help?
I'm kind of new at this, so please forgive me if I haven't given you enough. Just let me know what else you need. Thanks.