Transpilation issues for Mirror RB

[quantumjim]

Running the following results in the error

IBMInputValueError: 'The instruction cx on qubits (26, 16) is not supported by the target system. Circuits that do not match the target hardware definition are no longer supported after March 4, 2024. See the transpilation documentation (https://quantum.cloud.ibm.com/docs/guides/transpile) for instructions to transform circuits and the primitive examples (https://quantum.cloud.ibm.com/docs/guides/primitives-examples) to see this coupled with operator transformations.'

from qiskit_ibm_runtime.fake_provider import FakeSherbrooke
from qiskit_device_benchmarking.bench_code.mrb import MirrorRB

backend = FakeSherbrooke()

# number of shots per circuit
shots = 10000

# lengths of different mirror circuits to run
lengths = [2]+[4,10,20,50,100]

# set up the experiment object
exp = MirrorRB(
    range(backend.num_qubits),
    lengths,
    backend=backend,
    two_qubit_gate_density=0.25,
    num_samples=20,
    )
exp.set_run_options(
    shots=shots
)

#run
rb_data = exp.run()
print(rb_data.job_ids)