Tencent’s TBS is used to load web pages in the Android project, and the X5 kernel has always been easy to use. It was found that some users’ phones occasionally crashed.
After researching, I found an error message:

Using WebView from more than one process at once with the same data directory is not supported.

Complete information:

The error that the user device is 9.0 or higher was originally because the behavior change of WebView was included in the behavior change of Android Pie.

To improve application stability and data integrity in Android 9, applications can no longer allow multiple processes to share the same WebView data directory. 
 Such data directories generally store cookies, HTTP caches, and other persistent and temporary storage related to web browsing.

 In most cases, your app should only use the classes in the android.webkit package, such as WebView and CookieManager, in one process. 
 For example, you should move all Activity objects that use WebView into the same process. 
 You can enforce the "only one process" rule more strictly by calling disableWebView() in other processes of the application.
 This call can prevent WebView from being incorrectly initialized in these other processes, even if it is a call from a dependent content library.

 If your application must use instances of WebView in multiple processes, you must first use the WebView.setDataDirectorySuffix() function to specify a unique data directory suffix for each process, and then use a given instance of WebView in that process.
 This function will put the network data of each process into its own directory in the application data directory.

Solution:

public class WebApplication extends Application {

    private static final String PROCESS = "com.sunzn.core";

    @Override
    public void onCreate() {
        super.onCreate();
        initPieWebView();
    }

    private void initPieWebView() {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
            String processName = getProcessName(this);
            if (!PROCESS.equals(processName)) {
                WebView.setDataDirectorySuffix(getString(processName, "sunzn"));
            }
        }
    }
    public String getProcessName(Context context) {
        if (context == null) return null;
        ActivityManager manager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
        for (ActivityManager.RunningAppProcessInfo processInfo : manager.getRunningAppProcesses()) {
            if (processInfo.pid == android.os.Process.myPid()) {
                return processInfo.processName;
            }
        }
        return null;
    }

    public String getString(String s, String defValue) {
        return isEmpty(s) ? defValue : s;
    }

    public boolean isEmpty(String s) {
        return s == null || s.trim().length() == 0;
    }

}