No Retrofit annotation found. (parameter #1)

Question

I want get RSS code from a URL with Retrofit and if I enter url staticly in the get annotation everything is OK but with dynamic url I get an error.

My

Answer 1

I forgot to add @Field("")

Previously

   @POST("/api/verify-phone")
    @FormUrlEncoded
    fun sendOTP(phone_number: String): Observable

Fixed

@POST("/api/verify-phone")
@FormUrlEncoded
fun sendOTP(@Field("phone")phone_number: String): Observable