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How to solve this problem????? thanks !!

F:\Work_Github\Func\WeatherApp-master\app\src\main\java\com\gary\weatherdemo\ui\ItemView\CurWeatherViewItem.java:10: 错误: 程序包com.gary.weatherdemo.databinding不存在
import com.gary.weatherdemo.databinding.CurWeatherBinding;
^
F:\Work_Github\Func\WeatherApp-master\app\src\main\java\com\gary\weatherdemo\ui\ItemView\CurWeatherViewItem.java:17: 错误: 找不到符号
private CurWeatherBinding mDataBinding;
^
符号: 类 CurWeatherBinding
位置: 类 CurWeatherViewItem
F:\Work_Github\Func\WeatherApp-master\app\src\main\java\com\gary\weatherdemo\ui\ItemView\ForecastDayViewItem.java:9: 错误: 程序包com.gary.weatherdemo.databinding不存在
import com.gary.weatherdemo.databinding.WeatherForecastDayBinding;
^
F:\Work_Github\Func\WeatherApp-master\app\src\main\java\com\gary\weatherdemo\ui\ItemView\ForecastDayViewItem.java:17: 错误: 找不到符号
private WeatherForecastDayBinding mDataBinding;
^
符号: 类 WeatherForecastDayBinding
位置: 类 ForecastDayViewItem
F:\Work_Github\Func\WeatherApp-master\app\src\main\java\com\gary\weatherdemo\room\weather\CityForecastDAO.java:20: 错误: There is a problem with the query: [SQLITE_ERROR] SQL error or missing database (no such column: id)
List getAllByIds(long[] ids);
^
F:\Work_Github\Func\WeatherApp-master\app\src\main\java\com\gary\weatherdemo\room\city\CityBeanDAO.java:23: 错误: There is a problem with the query: [SQLITE_ERROR] SQL error or missing database (no such column: id)
List getAllByIds(long[] ids);
^
6 个错误
:app:compileDebugJavaWithJavac FAILED

Execution failed for task ':app:dataBindingMergeDependencyArtifactsDebug'.

Could not resolve all files for configuration ':app:debugCompileClasspath'.
Could not resolve com.umeng.umsdk:common:1.5.4.

my ide is 3.6.1 and gradle plugin version 3.6.0, gradle version 6.0.1

how to solve this issure ? thanks

public static CacheClient getInstance() {
if (mCacheClient == null) {
synchronized (CacheClient.class) {
if (mCacheClient == null) {
mCacheClient = new CacheClient();
}
}
}
return mCacheClient;
}