Facing issues when using mthree package for measurement error mitigation

[biswajitpaul18]

I am trying to use the mthree package for measurement error mitigation. When I am using the backend "Qasm simulator" the code is running smoothly, but when using "BraketLocalBackend" getting an error in the line "mit.cals_from_system(mappings)" and the error is "ValueError: Circuit must have instructions to run on a device". How can I fix this issue?
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trans_circ = transpile(circuit, backend=device)
mappings = mthree.utils.final_measurement_mapping(trans_circ)
result = device.run(trans_circ, shots=5000).result()
results=result.get_counts()

r1 = list(results.keys())
r2 = list(results.values())
print(r1)
print(r2)


mit = mthree.M3Mitigation(device)
mit.cals_from_system(mappings)

[yitchen-tim]

Hi @biswajitpaul18 , this error you saw is due to circuit being empty. You can fix this issue by adding identity gates to the circuit.

[kshitijc]

Closing this issue. Please reopen if there are other questions.