This circuit applies a Hadamard gate and then a series of rotation gates to a single qubit before measuring it.
```python
from qiskit import QuantumCircuit
from math import pi
# Create circuit with 1 qubit and 1 classical bit
qc = QuantumCircuit(1, 1)
qc.h(0)
qc.rx(pi / 2, 0)
qc.rz(pi / 4, 0)
qc.rx(-pi / 2, 0)
qc.measure(0, 0)
```'Failed to run program: \'409 Client Error: Conflict for url: https://api.quantum.ibm.com/runtime/jobs. {"errors":[{"message":"You have reached the limit of 3 pending jobs. Please wait for a job to complete or cancel one before submitting anything new.","code":3458,"solution":"Wait until some previous jobs were finished. You can cancel pending jobs to run new jobs.","more_info":"https://docs.quantum-computing.ibm.com/errors"}]}\''