Errors & troubleshooting

What common errors mean and how to clear them.

401 or invalid key: confirm the EVAL- or paid key, then check that it remains active and has not expired.

Shape mismatch: n, the starting configuration, target, bounds, and measured vector must agree.

No improvement: verify measurement conventions, target feasibility, component-level readout quality, timing, and whether the problem belongs to the registered envelope.

Timeout: hosted evaluation adds one HTTPS round trip per update. Move on-prem when the loop cannot tolerate that latency.