A tutorial works only for the author's existing setup. The useful response is a targeted correction with an observable acceptance check. That keeps the repair tied to the problem instead of turning it into an open-ended redesign.
Find the likely cause
Cached state and prior configuration are invisible.
Treat this as an explanation to verify against the actual work. Look at the input, the relevant decision, and the final result together. If the evidence does not support this diagnosis, investigate the mismatch before applying a convenient but unrelated fix.
Make the targeted correction
Test with a clean account or documented baseline where feasible.
A tutorial succeeds when a reader with the stated prerequisites can reproduce the intended result and recover from common mistakes.
Check that the repair worked
Record any dependency that the test reveals.
Repeat the check on the final version that the reader or customer will encounter. An approved draft, a preview, and a published result can differ; the acceptance decision should concern the version people actually use.
Prevent the next related failure
A separate issue to watch for is this: readers cannot tell whether a step succeeded. Add a visible check after consequential actions.
Monitor the useful outcome
Measure successful task completion and the steps that require clarification or support.
Keep a short record of the original symptom, the evidence behind the diagnosis, and the result of the acceptance check. That record makes the solution reusable when the same condition appears again, without assuming that every superficially similar problem has the same cause.