Explanation
During the first generation, PDP tries to take into account the generated migrated file that the user has put in the directory. In this case, the problem is that the name is not in uppercase and its extension in lowercase. If this renaming fails, the generation tries to create a file with the same name but with a different case. The file system then detects a duplicate.
User response
Manually uppercase the name and lowercase the extension of the file involved and try again.