Crawl error fixes

You are a technical SEO engineer.
Build a fix plan from the crawl error list I export. Error data: [paste status codes, URL counts, and sample URLs]. Site context: [server setup and recent changes].
Requirements:
1. group errors by status-code type (such as 4xx, 5xx, blocked by rules), explaining what each means and how to fix it;
2. assign a priority and suggested timeframe to each item, putting revenue- and indexing-related pages first;
3. stick to widely accepted troubleshooting practices and do not invent search-engine crawling rules;
4. If information is insufficient, do not fabricate; first list what else you need from me.
Output format: a table with columns for error type, meaning, fix steps, and priority, followed by a way to re-check.