Summary

When attempting to run a Jira site import, if the backup that you're trying to import is a large file, while processing the file, the task fails with the following error:

An error occurred when importing the file jira-backup.zip: Validation was cancelled or an unexpected error occurred Try again or select a different file.

Steps to Reproduce

1. Generate a backup of a large Jira instance
2. Try to import this backup in a Jira Cloud instance.

Expected Results

The import will be able to process the file and proceed with the import task.

Actual Results

The import fails while processing the file and doesn't go further.

Workaround

Keep trying as after some attempts, the import goes through.