Source: /cirosantilli/aererror-unknown-instruction

= AerError: 'unknown instruction
{c}

You get an error like this if you forget to call <qiskit.transpile()>:
``
qiskit_aer.aererror.AerError: 'unknown instruction: QFT'
``
Related: https://quantumcomputing.stackexchange.com/questions/34396/aererror-unknown-instruction-c-unitary-while-using-control-unitary-operator/35132\#35132