Question about echo server

main.go

package main
  
import (
    "fmt"
    "net/http"

    "github.com/labstack/echo/v4"
)

func main() {
    // Echo instance
    e := echo.New()

    // Routes
    e.POST("/:product/foo/bar", recovery)
    e.GET("/hello/world", hello)

    // Start server
    e.Logger.Fatal(e.Start(":1323"))
}

func recovery(c echo.Context) error {
    product := c.Param("product")
    return c.String(http.StatusOK, fmt.Sprintf("Product '%s' recovered", product))

}

func hello(c echo.Context) error {
    return c.String(http.StatusOK, "Hello, World!")
}

requests.sh

#!/bin/bash

# This works
curl -XGET localhost:1323/hello/world

# This works
curl -XPOST localhost:1323/hatatitla/foo/bar

# Following two calls don't work (they hang the echo server)
curl -XPOST localhost:1323/hatatitla/foo/barsomethigelse
curl -XGET localhost:1323/hello/worldabrakadabra