If it's about configuration the solution is to have a staging environment that's identical to production, except maybe the amount of data and reproduce the bug there.
If it's about read only data you could, in theory, create a read only replica of your production database, wait for it to be on par and then point staging to it and see if you can reproduce it.
The worst possible scenario is to debug production live but that's tricky and depends on the bug...
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If it's about configuration the solution is to have a staging environment that's identical to production, except maybe the amount of data and reproduce the bug there.
If it's about read only data you could, in theory, create a read only replica of your production database, wait for it to be on par and then point staging to it and see if you can reproduce it.
The worst possible scenario is to debug production live but that's tricky and depends on the bug...