小程序jsapi支付，使用sdk生成config对象时报错，java sdk wechatpay-java 0.2.6版本，报错信息为

Caused by: java.lang.ClassNotFoundException: com.google.gson.JsonSyntaxException

代码如下

@Bean
public Config getWxClientConfig() {
    log.info(">>>>>>>>>>> getWxClientConfig");
    RSAAutoCertificateConfig build = new RSAAutoCertificateConfig.Builder()
            .merchantId(weChatPayConfigInfo.getMchId())
            .privateKeyFromPath(RESOURCES_DIR + weChatPayConfigInfo.getPrivateKeyPath())
            .merchantSerialNumber(weChatPayConfigInfo.getMchSerialNo())
            .apiV3Key(weChatPayConfigInfo.getApiV3Key())
            .build();
    return build;
}