In the process of restoring the phone, there is always an error

If you see an error when you update or restore your iPhone, iPad, or iPod

1. Update iTunes. Get the latest version of iTunes for your computer.
2. Update your computer. Install updates for your Mac. ...
3. Plug directly into your computer. ...
4. Restart. ...
5. Check your computer's security software. ...
6. Try again.

If you see an error when you update or restore your iPhone, iPad, or ...

https://support.apple.com/en-us/HT201210

Apple Support Community Forum

This is Apple Support Community forum, for user to user interaction for information & idea sharing between users, if need be, extend support on technical knowhow in handling Apple products from more experienced fellow user, Apple Inc is neither here nor they are listening. 

Hence, we are unable to help with any of the following:

• Questions directed to Apple Inc
• Hardware repairs & tickets, 
• Service grievances & questions, 
• Warranty & Apple Care+ issues
• Order & Transaction related information, 
• Suggestions and Feedback for improvements
• Shipping & Transportation queries
• Repair costs or product or parts prices,
• Product & Launch Detail etc.. 
• Third party apps and its behaviour

For these questions, you may contact Apple Inc or your local Authorised Apple vendor directly. 

Thank you for your understanding and support.

Contact - Official Apple Support

https://support.apple.com/en-in/contact

See > Restore your iPhone, iPad, or iPod to factory settings - Apple Support