Errors in building vue project

problem description

I didn"t understand when I reported an error when I finally built the project

the environmental background of the problems and what methods you have tried

npm WARN deprecated browserslist@2.11.3: Browserslist 2 could fail on reading Browserslist > 3.0 config used in other tools.
npm WARN deprecated bfj-node4@5.3.1: Switch to the bfj package for fixes and new configurations!
npm WARN deprecated socks@1.1.10: If using 2.x branch, please upgrade to at least 2.1.6 to avoid a serious bug with socket data flow and an import issue introduced in 2.1.0
npm WARN deprecated istanbul-lib-hook@1.2.1: 1.2.0 should have been a major version bump

Youdao Translation

npm warns against browsers used by disapproved browser@2.11.3:browsercraigslist 2 in other tools. 0 . three. 0 .
npm warns bfj-node4@5.3.1: to switch to the "bfj" package for fixes and new features!
npm warns against discarded socks @ 1.1.10: if you use 2. Branch x, upgrade to at least 2.1.6 to avoid serious errors in using socket data streams and import problems introduced by 2.1.0.
npm warns disapproving Istanbul-Lib-Hook, 1. two. two. two. 0 should be a major version

related codes

/ / Please paste the code text below (do not replace the code with pictures)

what result do you expect? What is the error message actually seen?

I didn"t encounter how this was caused when I was building a project before. Ask God to solve it

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Apr.11,2021

you must have upgraded or downgraded npm

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