该问题是由于HTTPS安全认证验证失败引起的。可能的解决方案是安装合适的证书。具体来说，可以通过自定义SSL Socket Factory并使用它来处理证书。示例代码如下：

val trustAllCerts = arrayOf(object : X509TrustManager {
    override fun checkClientTrusted(chain: Array, authType: String) {
    }

    override fun checkServerTrusted(chain: Array, authType: String) {
        try {
            chain[0].checkValidity()
        } catch (e: Exception) {
            throw CertificateException("Certificate not valid or trusted.")
        }
    }

    override fun getAcceptedIssuers(): Array = arrayOf()
})

val sslContext = SSLContext.getInstance("TLS")
sslContext.init(null, trustAllCerts, SecureRandom())

val sslSocketFactory = sslContext.socketFactory

val client = OkHttpClient.Builder().apply {
    sslSocketFactory(sslSocketFactory, trustAllCerts[0] as X509TrustManager)
    hostnameVerifier { _, _ -> true }
}.build()

val retrofit = Retrofit.Builder()
    .baseUrl(baseUrl)
    .client(client)
    .addConverterFactory(GsonConverterFactory.create())
    .build()