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I had a question earlier about the Numpy DeprecationWarning flooding issue. I just updated the Python in my regular jupyter notebook and have trouble running the following cell:

cal_job = execute(cal_circuits, backend = backend, shots = 1024, optimization_level = 0 ) ***cal_results = cal_job.result()*** meas_fitter = CompleteMeasFitter(cal_results, state_labels) fig, ax = plt.subplots(figsize=(10, 10)) meas_fitter.plot_calibration(ax)

My code worked fine before upgrading but now it shows the following error message (The line with the error is marked with***):

SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate

On the IBMQ Experience page it shows my job has been successfully executed, but I cannot obtain any result from the notebook. What should I do? Thanks so much for the help!

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If running on MacOS, did you try to Install Certificates? You can execute the following line in a terminal, replacing <version> with your Python version.

/Applications/Python\ <version>/Install\ Certificates.command
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  • $\begingroup$ Thanks, should I do that in my terminal? $\endgroup$ Commented Feb 6, 2021 at 16:33
  • $\begingroup$ Yeap. Answer updated to include that important detail. $\endgroup$ Commented Feb 6, 2021 at 16:35
  • $\begingroup$ Am I supposed to type the above line directly into terminal on Mac? This gives me an error $\endgroup$ Commented May 18, 2021 at 4:45

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