Errors related to missing files or ZipArchive failures can prevent a successful backup build in Duplicator. This article provides solutions to resolve these issues.

Resolving Zip warning: No such file or directory

This error occurs when a plugin or process modifies files during the backup process.

Option 1: Check for Plugin Conflicts

1. Identify any security or backup plugins that may be altering files.
2. Temporarily deactivate the identified plugin.
3. Build the backup again.
4. Reactivate the plugin once the backup is complete.

Option 2: Filter Cache Directory

If the source of the issue is unknown, filter out the cache directory:

1. Enable File Filters.
2. Click the cache link below the Directory box to exclude it from the backup.
   

Resolving ZipArchive Close Failures

ZipArchive close failures can occur due to host restrictions, file sizes, or insufficient disk space.

Option 1: Switch to the Duplicator Archive Format (DupArchive)

The DupArchive format is optimized for restricted hosting environments.

1. Go to Settings » Backups.
2. Set Archive Engine to DupArchive.

Note: In Duplicator Lite, DupArchive supports backups up to 500 MB.

Option 2: Filter Unnecessary Files

Filtering non-essential files can reduce the backup size and prevent failures:

1. During the scan phase, check the Size Checks list.
2. Exclude unnecessary backup files, nested WordPress installations, or large unused directories.

Option 3: Check Disk Space

Ensure you have at least twice the size of your site available:

1. Log in to your hosting panel and check your available disk space.
2. Delete unnecessary files if space is insufficient.
3. If needed, contact your host to increase your disk quota.

Option 4: Adjust Custom Options

Modify settings based on your Duplicator version:

• Go to Settings » Backups Tab » Archive Engine and enable Shell Exec if available.

Option 5: Use a Two-Part Install

For hosts with resource limitations, performing a two-part install can help bypass ZipArchive failures. Follow the steps outlined in this guide to complete the process.