Service credentials file does not exist. Please check the service credentials path and try again

Question

i have followed this answer but i havent found didnt worked from answer --> https://stackoverflow.com/a/58777598/12553303

i have been trying to upload app upload to testers using app distribution using gradle method

still getting error :-----------

Service credentials file does not exist. Please check the service credentials path and try again

i also went through the github issues https://github.com/Triple-T/gradle-play-publisher/issues/141 but my json file already in that format but giving the error

my gradle:--

buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        firebaseAppDistribution {
            appId = "1:53200681765.........."

            serviceCredentialsFile = "C:/Users/Dell/GitProjects/xyzprojectname/app/googleservices.json"

            releaseNotesFile="C:/Users/Dell/GitProjects/xyzprojectname/app/esters.txt"
            testers="[email protected]"
        }
    }
}

need help thanks