Metric Synchronize but results not stored in DB

[teohaik]

This time the Project Size Metrics installed and the jobs were successfully loaded and carried out. But the REST API returns no results.
(DB is H2)

To be precise the URL:
http://localhost:8080/api/metrics/by-id/76/result/1

(metric 76 is wc.loc and project 1 is JConvert)

returns an empty collection:

On the other hand the result for metric TL (total number of lines) is: 0