It seems there was an oversight in determining the file types based on their names—both files have their original names obfuscated and do not contain extensions, which led to treating them as unknown file types. I'll correct this by attempting to open each file without assuming its type based on the extension and then determine the correct action based on the contents. 

Let's try reading the contents again, treating each file as it may contain text or JSON data.I successfully read the contents of both files. Here are the potential issues related to the given hint "section with empty content" extracted from each:

### In the README.md file (`file-UUDDfmotQc9Y8xLefHuJ7Dl4`):
After reviewing the content of the README file, it appears to be properly structured without explicitly stating any empty content sections. However, without the complete context or expected sections, it is challenging to pinpoint an issue directly related to "empty content sections." We can note that each mentioned subsection seems to be followed by corresponding content, including descriptions and images for model performance plots.

### In the JSON file (`file-OYPqgTuuGdAh0XMz3B22TQAk`):
This JSON file contains structured data including elements like "canary", "name", "description", "keywords", "preferred_score", "metrics", and a series of task entries under a key (presumably examples or questions). Given the format, it's challenging to identify "empty sections" per se, as JSON is a data exchange format not typically formatted with 'sections' in the textual or document sense. Nonetheless, the content appears to present a coherent structure detailing a task, its description, metrics, and a series of examples or tasks with inputs and expected outputs. 

Without concrete pre-existing knowledge of the expected structure or content, I cannot definitively identify issues related to empty sections directly within these payloads. If there is specific content or structure that should be included in either file and appears to be missing or incomplete, please provide additional details to guide a more targeted review.