# developing
- Fix 4503 and 4504: Add `when` to `Write([]byte)` method and add `prefix` to `writeMsg`. [4507](https://github.com/beego/beego/pull/4507)
- Fix 4480: log format incorrect. [4482](https://github.com/beego/beego/pull/4482)
- Remove `duration` from prometheus labels. [4391](https://github.com/beego/beego/pull/4391)
- Fix `unknown escape sequence` in generated code. [4385](https://github.com/beego/beego/pull/4385)
- Fix 4590: Forget to check URL when FilterChain invoke `next()`. [4593](https://github.com/beego/beego/pull/4593)
- Fix 4727: CSS when request URI is invalid. [4729](https://github.com/beego/beego/pull/4729)
- Using fixed name `commentRouter.go` as generated file name. [4385](https://github.com/beego/beego/pull/4385)
- Fix 4383: ORM Adapter produces panic when using orm.RegisterModelWithPrefix. [4386](https://github.com/beego/beego/pull/4386)
- Fix 4444: panic when 404 not found. [4446](https://github.com/beego/beego/pull/4446)
- Fix 4435: fix panic when controller dir not found. [4452](https://github.com/beego/beego/pull/4452)
- Hotfix:reflect.ValueOf(nil) in getFlatParams [4716](https://github.com/beego/beego/issues/4716)