How can I process proxy onError manually?

[Cinux-Chosan]

vue-cli/packages/@vue/cli-service/lib/util/prepareProxy.js

Line 100 in f0f254e

onError: onProxyError(target)

I indeed require a custom response when encountering a proxy error.

[Cinux-Chosan]

From the code perspective, it is hardcoded to only use the default console prompts provided by Vue CLI and does not support custom error handling logic.