Try the following steps:

1. Navigate to the Key Flexfields Segments form and query back your structure.
2. Unfreeze the structure
3. Change the 'View Name'.
If you want to keep the same name, you can replace the spaces in the view name with underscores.
4. Freeze the structure and click compile.
This will trigger "Program - Generate Ledger Flexfield" and "Flexfield View Generator" concurrent programs.
5. Check the log files of both programs to confirm there are no errors.