Fix FileNotFoundError

✅ Solution

FileNotFoundError in Weights & Biases often occurs when syncing offline runs because artifact files created using `Artifact.new_file` or similar methods are not saved to disk before the syncing process begins. Ensure that you explicitly call `artifact.save()` after creating or modifying the artifact and before starting the `wandb sync` process to persist the files and resolve the error. Additionally, verify the file paths if the error persists even after saving.