Separate bugs from usage questions
Send reproducible bugs to your tracker and usage questions to docs or a community channel. Tell the person where their report went.
Ask for a minimal reproduction
A small example, the version and the error text solve most issues. Put these requests in a saved reply.
Use the community
Point people to forums or chat where others answer, and thank the helpers. Staff time goes further when the community does part of the work.
Keep the docs in sync
Every repeated question is a gap in the docs. Fix the page, then link it in the next reply.
Be honest about status
Say when something is a known issue, when it will be looked at and when it will not. Developers prefer a clear no to silence.