I imported the demo content and the import failed, leaving my site broken. What to do to fix?

—Upload files—
Widget file was not uploaded. Error: No file provided.

—Upload files—
Customizer file was not uploaded. Error: No file provided.

—Upload files—
Redux file was not uploaded. Error: No file provided.

—Upload files—
The import files were successfully uploaded!
Initial max execution time = 120
Files info:
Site URL = http://localhost/wordpress
Data file = C:\xampp\htdocs\wordpress/wp-content/uploads/2022/12/fitness-club-gym.xml
Widget file = not defined!
Customizer file = not defined!
Redux files:
not defined!

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New AJAX call!
[WARNING] Failed to import product_visibility exclude-from-catalog
[WARNING] Failed to import product_visibility exclude-from-search
[WARNING] Failed to import product_type external
[WARNING] Failed to import product_visibility featured
[WARNING] Failed to import product_type grouped
[WARNING] Failed to import product_visibility outofstock
[WARNING] Failed to import product_visibility rated-1
[WARNING] Failed to import product_visibility rated-2
[WARNING] Failed to import product_visibility rated-3
[WARNING] Failed to import product_visibility rated-4
[WARNING] Failed to import product_visibility rated-5
[WARNING] Failed to import product_type simple
[WARNING] Failed to import product_cat Uncategorized
[WARNING] Failed to import product_type variable