The first solution: ( recommended , generally can solve the problem):
After uninstalling, download the latest version from the official website and install it again.
Note: To uninstall, be sure to uninstall all cached data.
The second solution: ( not recommended , you need to log in to the user, sometimes there will be a problem of not being able to log in to the network)
1. Set the default engine
1. Open the settings
2. Choose Baidu or 360
2. Install the chrome synchronization assistant to solve the problem that the google user account cannot be registered and the google network cannot be opened directly.
After downloading and unzipping, get a crx file and drag it to the blank space in the extension
If the following error occurs and cannot be dragged in,
Error handling method:
Change the extension of the [crx file] to a zip file, and drag it into the extension program. Or unzip it into a folder, and then click [Load unzipped extension] to import it!
3. Register a google account
1. When the [chrome sync assistant] is complete, the login page can be opened
2. If the pop-up page still cannot be loaded, don't cry! There is still a way.
3. Close the pop-up window and click the icon generated by the desktop
Or, open the Google URL and click Login
4. Create an account
5. Username and Password 
6. Mobile phone number and backup email
7. Send verification code
8. Verify
9. Enable mobile phone number login
10. Agree to the agreement
11. Registration is complete! Turn on sync
5. As long as the user is logged in, the plug-in will not be lost
