Error 'A folder already exists with name image.default.company.logo' during startup after Upgrade

Issue

After upgrading from a previous version of Liferay DXP, the server fails to start up correctly and throws a DuplicateFolderNameException in the logs. The error indicates that a folder named image.default.company.logo already exists.

ERROR [main][UpgradeExecutor:333] A folder already exists with name image.default.company.logo
com.liferay.document.library.kernel.exception.DuplicateFolderNameException: A folder already exists with name image.default.company.logo
    at com.liferay.portlet.documentlibrary.service.impl.DLFolderLocalServiceImpl.validateFolder(DLFolderLocalServiceImpl.java:1441)
    ...
    at com.liferay.commerce.product.internal.model.listener.AddRepositoryIdInitialRequestPortalInstanceLifecycleListener.doPortalInstanceRegistered(AddRepositoryIdInitialRequestPortalInstanceLifecycleListener.java:112)

This issue occurs because a Liferay Commerce startup process attempts to create a default folder that already exists due to orphaned data from the previous version.

Environment

Liferay DXP Quarterly Releases

Resolution

The solution is to remove the orphaned repository and folder records by running a Groovy script. As a prerequisite, it is highly recommended to perform a full backup of the database and the document library.

Check there is at least one DLFolder with the name 'image.default.company.logo':
```
select * from DLFolder d where name = 'image.default.company.logo'
```

Check no DLFileEntry exists related to any of the 'image.default.company.logo' related repositories:

select * from dlfileentry where repositoryId in (select repositoryId from Repository r where name = 'image.default.company.logo' AND portletId = "com.liferay.commerce.product");

Find the Repository IDs related to 'image.default.company.logo' and Commerce Portlet:
```
SELECT repositoryId FROM Repository WHERE name = 'image.default.company.logo' AND portletId = 'com.liferay.commerce.product';
```
Take note of the repositoryIds returned by this query.
Run the Cleanup Script

Navigate to Control Panel → Server Administration → Script and execute the following Groovy script. Replace the x with the IDs you found in the previous step.
```
import java.util.Arrays;
import java.util.List;
import com.liferay.portal.kernel.service.RepositoryLocalServiceUtil;

List<Integer> repositoryIdList = Arrays.asList(x,x,x,x,x);

for (int i = 0; i < repositoryIdList.size(); i++) {
	RepositoryLocalServiceUtil.deleteRepository(Long.valueOf(repositoryIdList.get(i)));
}
```
This script will delete the problematic repository and its associated folder. You must then perform a reindex.

Please backup your ddbb and DL before running this script.

After these steps, the error should no longer appear during startup.