请教下，怎么部署到netlify，还有能不能增加缓存功能

[love2wind]

我试了几次部署都是出现以下错误。还有，能不能增加个缓存功能。
This function has crashed
An unhandled error in the function code triggered the following message:

Runtime.HandlerNotFound - api.handler is undefined or not exported

Stack trace
Runtime.HandlerNotFound: api.handler is undefined or not exported
at UserFunction.js.module.exports.load (file:///var/runtime/index.mjs:1122:15)
at async start (file:///var/runtime/index.mjs:1282:23)
at async file:///var/runtime/index.mjs:1288:1
Connection details
Netlify internal ID: 01HJ96G3AKVP3MDETJYT4PETCP