Hello, I have a problem. In the code below, I try ...

# server

[BingZi233]

Hello, I have a problem. In the code below, I try to set up a static directory. Unfortunately, I ran into a 404 error. I looked at the WIKI example, but nothing improved.

[Phil Richardson]

Based on the log, your config assumes that static("assets") combined with the nested resources("css") exposes /assets/css as the resource access path from which ollie.css will be obtained.

What it is is actually saying is, when you want to access a resource under /assets such as /assets/ollie.css, search for ollie.css inside of each of the following resources directories.

static/css
static/imgs
static/js
static/scss
static/vendors

Whereas your ollie.js is in static/assets/css

It's worth looking at the specific example given in https://github.com/ktorio/ktor-documentation/tree/main/codeSnippets/snippets/static-resources

It provides a direct example of this config, including the files in their applicable resource directories.

If you want to update the config instead of restructuring your files, depends on how much freedom to access resources you want to permit.

If you must restrict so only content from the js, css, imgs, scss & vendors (and sub-dirs of them) will be served, then you will need to split it out into more static() calls.
Example

routing {
    static("/") {
        staticBasePackage = "static"
        resource("index.html")
        defaultResource("index.html")
        static("assets/css") {
            resources("assets/css")
        }
        static("assets/js") {
            resources("assets/js")
        }
    }
}

If your ok to serve all directories and sub-dirs in static/assets, including say fictional static/assets/other that isn't specifically in the config right now, then you can retain much of your current config.
Example

routing {
    static("/") {
        staticBasePackage = "static"
        resource("index.html")
        defaultResource("index.html")
        static("assets") {
            staticBasePackage = "static/assets"
            resources(".")
        }
    }
}

[BingZi233]

Thank you