wildcard route ':slug' conflicts with existing children

[DanikNik]

I am using this code to implement a router, the openapi spec is given by my mentor so routes are not to be changed

type Route struct {
	Name    string
	Method  string
	Path    string
	Handler fasthttp.RequestHandler
}

type Routes []Route

func NewRouter() *fasthttprouter.Router {
	router := fasthttprouter.New()
	for _, route := range routes {
		var handler fasthttp.RequestHandler
		handler = route.Handler

		router.Handle(
			route.Method,
			route.Path,
			logger.Logger(
				middleware.ApplyMiddlewares(
					handler,
					middleware.ContentTypeMiddleware),
				route.Name),
		)
	}

	return router
}

var routes = Routes{
        Route{
		"ThreadCreate",
		strings.ToUpper("Post"),
		"/api/forum/:slug/create",
		controllers.ThreadCreate,
	},
	Route{
		"ForumGetOne",
		strings.ToUpper("Get"),
		"/api/forum/:slug/details",
		controllers.ForumGetOne,
	},

	Route{
		"ForumGetThreads",
		strings.ToUpper("Get"),
		"/api/forum/:slug/threads",
		controllers.ForumGetThreads,
	},

	Route{
		"ForumGetUsers",
		strings.ToUpper("Get"),
		"/api/forum/:slug/users",
		controllers.ForumGetUsers,
	}, ... <here more routes, these are for example>
}

So i have following issue:

panic: wildcard route ':slug' conflicts with existing children in path '/api/forum/:slug/create'

goroutine 1 [running]:
github.com/buaazp/fasthttprouter.(*node).insertChild(0xc0000b62d0, 0xc0000cbc01, 0x6d3d60, 0xc, 0x6d3d55, 0x17, 0xc00009cc00)
	/home/daniknik/go/src/github.com/buaazp/fasthttprouter/tree.go:236 +0x73b
github.com/buaazp/fasthttprouter.(*node).addRoute(0xc0000b62d0, 0x6d3d55, 0x17, 0xc00009cc00)
	/home/daniknik/go/src/github.com/buaazp/fasthttprouter/tree.go:193 +0x20c
github.com/buaazp/fasthttprouter.(*Router).Handle(0xc000084de0, 0xc00008c570, 0x4, 0x6d3d55, 0x17, 0xc00009cc00)
	/home/daniknik/go/src/github.com/buaazp/fasthttprouter/router.go:210 +0xbe
github.com/DanikNik/tech-park-db-hw/internal/pkg/router.NewRouter(0x4070e0)
	/home/daniknik/go/src/github.com/DanikNik/tech-park-db-hw/internal/pkg/router/router.go:27 +0x19f
main.main()
	/home/daniknik/go/src/github.com/DanikNik/tech-park-db-hw/cmd/main.go:10 +0x26

Am I using path variables incorrect or something else?

[DanikNik]

Here I post full set of routes explicitly

var routes = Routes{
	Route{
		"Index",
		"GET",
		"/api/",
		controllers.Index,
	},

	Route{
		"Clear",
		strings.ToUpper("Post"),
		"/api/service/clear",
		controllers.Clear,
	},

	Route{
		"ForumCreate",
		strings.ToUpper("Post"),
		"/api/forum/create",
		controllers.ForumCreate,
	},

	Route{
		"ForumGetOne",
		strings.ToUpper("Get"),
		"/api/forum/:slug/details",
		controllers.ForumGetOne,
	},

	Route{
		"ForumGetThreads",
		strings.ToUpper("Get"),
		"/api/forum/:slug/threads",
		controllers.ForumGetThreads,
	},

	Route{
		"ForumGetUsers",
		strings.ToUpper("Get"),
		"/api/forum/:slug/users",
		controllers.ForumGetUsers,
	},

	Route{
		"PostGetOne",
		strings.ToUpper("Get"),
		"/api/post/:id/details",
		controllers.PostGetOne,
	},

	Route{
		"PostUpdate",
		strings.ToUpper("Post"),
		"/api/post/:id/details",
		controllers.PostUpdate,
	},

	Route{
		"PostsCreate",
		strings.ToUpper("Post"),
		"/api/thread/:slug_or_id/create",
		controllers.PostsCreate,
	},

	Route{
		"Status",
		strings.ToUpper("Get"),
		"/api/service/status",
		controllers.Status,
	},
	// without this route everything works well, I am discouraged
	Route{
		"ThreadCreate",
		strings.ToUpper("Post"),
		"/api/forum/:slug/create",
		controllers.ThreadCreate,
	},

	Route{
		"ThreadGetOne",
		strings.ToUpper("Get"),
		"/api/thread/:slug_or_id/details",
		controllers.ThreadGetOne,
	},

	Route{
		"ThreadGetPosts",
		strings.ToUpper("Get"),
		"/api/thread/:slug_or_id/posts",
		controllers.ThreadGetPosts,
	},

	Route{
		"ThreadUpdate",
		strings.ToUpper("Post"),
		"/api/thread/:slug_or_id/details",
		controllers.ThreadUpdate,
	},

	Route{
		"ThreadVote",
		strings.ToUpper("Post"),
		"/api/thread/:slug_or_id/vote",
		controllers.ThreadVote,
	},

	Route{
		"UserCreate",
		strings.ToUpper("Post"),
		"/api/user/:nickname/create",
		controllers.UserCreate,
	},

	Route{
		"UserGetOne",
		strings.ToUpper("Get"),
		"/api/user/:nickname/profile",
		controllers.UserGetOne,
	},

	Route{
		"UserUpdate",
		strings.ToUpper("Post"),
		"/api/user/:nickname/profile",
		controllers.UserUpdate,
	},
}

[mxfp0]

👍