I need our clients blog checking for 404 errors

Our client has requested a report that flags all 404 errors within their /blog sub-folder. We have SEMRush but our plan only allows us to crawl 20,000 pages and our clients site has more than this threshold, so this needs to be considered before sharing your proposal. See screenshot attached.

We tried filtering for the /blog sub-folder in SEMRush but this did not work.

We are a marketing agency so there is an opportunity for ongoing work here for the right candidate.

Please send your proposals.