jsondecode error occurring while running the quantum computer

Hello, I am a graduate student recently studying quantum computers. I heard that it is possible to run a quantum computer through MATLAB, so I tried to implement a simple example, but a transpile error occurred. I looked at the bug reports and tried again. The task was successfully completed, but when I used the fetchOutput function to see the results, the following error occurred. From the error details, it seems that the response is not in a suitable data format for using jsondecode. What should I do?

>> fetchOutput(task)

An error occurred during the following usage: jsondecode The JSON text must be a character vector or a scalar of string type that is not a missing value.

error ocurrence: quantum.internal.ibm.getQuantumTaskResults (12rh line)

results = jsondecode(response);

error ocurrence: quantum.backend.QuantumTaskIBM/fetchOutput (224th line)

results = quantum.internal.ibm.getQuantumTaskResults(obj.Credentials, obj.TaskID);

Please note that I am using the Korean version of MATLAB, so the error message might be different from the English version, but the meaning is the same.

Answer 1

[Steven Lord]

Please see Bug Report 3241896.

[Kiwon Jeong]

task =

QuantumTaskIBM - 속성 있음:

TaskID: "ct1pnkpnb5jg008f6w4g"

SessionID: <missing>

AccountName: "KWJEONG"

Status: "finished"

I tried to follow bug report, and I got task successfully. However, when I try to run task with fetchOutput(task), I still get error with jsondecode.

[Steven Lord]

Hmm. The developers are investigating this error and we will update this Answers post with more information as it becomes available.