TypeError: Parser error: Unknown character encoding has been provided.
    at Object.handleWeixin [as mp.weixin.qq.com] (file:///home/cuihao/dev/fixurl-worker/src/handlers/weixin.ts:29:6)
    at async jsonError (file:///home/cuihao/dev/fixurl-worker/node_modules/wrangler/templates/middleware/middleware-miniflare3-json-error.ts:22:10)
    at async drainBody (file:///home/cuihao/dev/fixurl-worker/node_modules/wrangler/templates/middleware/middleware-ensure-req-body-drained.ts:5:10)