Last record from control file: 1768148127
tail: cannot open '/home/phil/data/HM/BLVN/WEL/datafile' for reading: Permission denied
Size of TMP4 file before the Timestamp extract: 0 /tmp/tmp.CpgfN8sKfw
First 10 records of TMP4
Size of TMP1 file: 0 /tmp/tmp.YiJOtrltf8

Processing complete:
✓ Valid JSON rows: 0 (saved to /tmp/tmp.VtPSRSMjdi)
✗ Invalid rows: 0 (saved to invalid_rows.txt)
Empty so no processing required