java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING at line 1 column 1 path $ GSON

Question

Json of this kind comes to postman

{
"message": "The given data was invalid.",
"errors": {
    "phone": [
        "The phone has already been taken."
    ]
}

When prompted in the code, the error "java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING at line 1 column 1 path $" appears

Here are my models

data class Response(
        @SerializedName(MESSAGE)
        val reason: String,

        @SerializedName(ERRORS)
        val errors: Errors? = null
    ) {
        companion object {
            private const val MESSAGE = "message"
            private const val ERRORS = "errors"    }
    }

data class Errors(

    @SerializedName("phone")
    val phone: List<String?>? = null
)

When I add a phone number that is not already on my account, I receive such a json

{
    "message": "Successfully added mobile!"
}

Answer 1

Create a two files Response.kt and Errors.kt Inside Response.kt

import com.google.gson.annotations.SerializedName

data class Response(
    @SerializedName("errors")
    val errors: Errors?,
    @SerializedName("message")
    val message: String?
)

Inside Errors.kt

import com.google.gson.annotations.SerializedName

data class Errors(
    @SerializedName("phone")
    val phone: List<String?>?
)

If Errors are not received in JSON means Please check null. If not working Please your checkresponse format.Hope it will help you.