Xevil : what does this error message mean

While it solves some captchas I get lots of these, thanks for your help (free demo version)

28/10/2024 20:36:00: GET /res.php?key=GSA&action=get&id=66
28/10/2024 20:36:00: id = 66
28/10/2024 20:36:00: text for id 66 is empty!
28/10/2024 20:36:00: GET /res.php?key=GSA&action=get&id=66
28/10/2024 20:36:00: id = 66
28/10/2024 20:36:00: text for id 66 is empty!
28/10/2024 20:36:00: GET /res.php?key=GSA&action=get&id=66
28/10/2024 20:36:00: id = 66
28/10/2024 20:36:00: text for id 66 is empty!
28/10/2024 20:36:01: GET /res.php?key=GSA&action=get&id=66
28/10/2024 20:36:01: id = 66
28/10/2024 20:36:01: text for id 66 is empty!
28/10/2024 20:36:01: GET /res.php?key=GSA&action=get&id=66
28/10/2024 20:36:01: id = 66
28/10/2024 20:36:01: text for id 66 is empty!
28/10/2024 20:36:01: GET /res.php?key=GSA&action=get&id=66
28/10/2024 20:36:01: id = 66
28/10/2024 20:36:01: text for id 66 is empty!
28/10/2024 20:36:02: GET /res.php?key=GSA&action=get&id=66
28/10/2024 20:36:02: id = 66
28/10/2024 20:36:02: text for id 66 is empty!
28/10/2024 20:36:06: POST /in.php
28/10/2024 20:36:08: GET /res.php?key=GSA&action=get&id=71
28/10/2024 20:36:08: id = 71
28/10/2024 20:36:08: text for id 71 is empty!
28/10/2024 20:36:08: GET /res.php?key=GSA&action=get&id=71
28/10/2024 20:36:08: id = 71
28/10/2024 20:36:08: text for id 71 is empty!
28/10/2024 20:36:08: GET /res.php?key=GSA&action=get&id=71
28/10/2024 20:36:08: id = 71
28/10/2024 20:36:08: text for id 71 is empty!
28/10/2024 20:36:09: GET /res.php?key=GSA&action=get&id=71
28/10/2024 20:36:09: id = 71
28/10/2024 20:36:09: text for id 71 is empty!
28/10/2024 20:36:09: GET /res.php?key=GSA&action=get&id=71
28/10/2024 20:36:09: id = 71
28/10/2024 20:36:09: text for id 71 is empty!
28/10/2024 20:36:09: GET /res.php?key=GSA&action=get&id=71
28/10/2024 20:36:09: id = 71
28/10/2024 20:36:09: text for id 71 is empty!
28/10/2024 20:36:10: GET /res.php?key=GSA&action=get&id=71
28/10/2024 20:36:10: id = 71
28/10/2024 20:36:10: text for id 71 is empty!
28/10/2024 20:36:10: GET /res.php?key=GSA&action=get&id=71
28/10/2024 20:36:10: id = 71
28/10/2024 20:36:10: text for id 71 is empty!
28/10/2024 20:36:10: GET /res.php?key=GSA&action=get&id=71
28/10/2024 20:36:10: id = 71
28/10/2024 20:36:10: text for id 71 is empty!
28/10/2024 20:36:11: GET /res.php?key=GSA&action=get&id=71
28/10/2024 20:36:11: id = 71
28/10/2024 20:36:11: text for id 71 is empty!
28/10/2024 20:36:11: GET /res.php?key=GSA&action=get&id=71
28/10/2024 20:36:11: id = 71
28/10/2024 20:36:11: text for id 71 is empty!
28/10/2024 20:36:11: GET /res.php?key=GSA&action=get&id=71
28/10/2024 20:36:11: id = 71
28/10/2024 20:36:11: text for id 71 is empty!
28/10/2024 20:36:12: GET /res.php?key=GSA&action=get&id=71
28/10/2024 20:36:12: id = 71
28/10/2024 20:36:12: text for id 71 is empty!
28/10/2024 20:36:12: GET /res.php?key=GSA&action=get&id=71
28/10/2024 20:36:12: id = 71
28/10/2024 20:36:12: text for id 71 is empty!
28/10/2024 20:36:12: GET /res.php?key=GSA&action=get&id=71
28/10/2024 20:36:12: id = 71
28/10/2024 20:36:12: text for id 71 is empty!
28/10/2024 20:36:13: GET /res.php?key=GSA&action=get&id=71
28/10/2024 20:36:13: id = 71
28/10/2024 20:36:13: text for id 71 is empty!
28/10/2024 20:36:13: GET /res.php?key=GSA&action=get&id=71
28/10/2024 20:36:13: id = 71
28/10/2024 20:36:13: text for id 71 is empty!
28/10/2024 20:36:14: GET /res.php?key=GSA&action=get&id=71
28/10/2024 20:36:14: id = 71
28/10/2024 20:36:14: text for id 71 is empty!
28/10/2024 20:36:15: GET /res.php?key=GSA&action=get&id=71
28/10/2024 20:36:15: id = 71
28/10/2024 20:36:15: text for id 71 is empty!
28/10/2024 20:36:15: GET /res.php?key=GSA&action=get&id=71
28/10/2024 20:36:15: id = 71
28/10/2024 20:36:15: text for id 71 is empty!
28/10/2024 20:36:15: GET /res.php?key=GSA&action=get&id=71
28/10/2024 20:36:15: id = 71
28/10/2024 20:36:15: text for id 71 is empty!
28/10/2024 20:36:16: GET /res.php?key=GSA&action=get&id=71
28/10/2024 20:36:16: id = 71
28/10/2024 20:36:16: text for id 71 is empty!
28/10/2024 20:36:16: GET /res.php?key=GSA&action=get&id=71
28/10/2024 20:36:16: id = 71
28/10/2024 20:36:16: text for id 71 is empty!
28/10/2024 20:36:16: GET /res.php?key=GSA&action=get&id=71
28/10/2024 20:36:16: id = 71
28/10/2024 20:36:16: text for id 71 is empty!
28/10/2024 20:36:17: GET /res.php?key=GSA&action=get&id=71
28/10/2024 20:36:17: id = 71
28/10/2024 20:36:17: text for id 71 is empty!
28/10/2024 20:36:18: GET /res.php?key=GSA&action=get&id=71
28/10/2024 20:36:18: id = 71
28/10/2024 20:36:18: text for id 71 is empty!
28/10/2024 20:36:18: GET /res.php?key=GSA&action=get&id=71
28/10/2024 20:36:18: id = 71
28/10/2024 20:36:18: text for id 71 is empty!
28/10/2024 20:36:19: GET /res.php?key=GSA&action=get&id=71
28/10/2024 20:36:19: id = 71
28/10/2024 20:36:19: text for id 71 is empty!
28/10/2024 20:36:19: GET /res.php?key=GSA&action=get&id=71
28/10/2024 20:36:19: id = 71
28/10/2024 20:36:19: text for id 71 is empty!
28/10/2024 20:36:19: GET /res.php?key=GSA&action=get&id=71