Problem with add group button in AOS quotes

I tried to add to service line quanity field and edited the AOS_Products_Quotes/line_items.js but not worked. So i put the old file in the place but now adding group button not working. In the quotes is not working to. Is it possible to replace f.e. more files like it was default or do something else (in the simple way) ?
thanks for eny help.

In log i found that text:

“createRelationshipMeta: Metadata for table does not exist”