Media Library won't complete scan

[ebrandon]

When I try to scan my media library, Subsonic starts scanning it but fails part way through with no explanation.
Latest Mac OS, latest Subsonic 16.1.3

[11/23/18 10:34:21 AM PST] INFO MediaScannerService Starting to scan media library.
[11/23/18 10:34:21 AM PST] INFO MediaScannerService Scanned media library with 250 entries.
[11/23/18 10:34:21 AM PST] INFO MediaScannerService Scanned media library with 500 entries.
[11/23/18 10:34:21 AM PST] INFO MediaScannerService Scanned media library with 750 entries.
[11/23/18 10:34:21 AM PST] INFO MediaScannerService Scanned media library with 1000 entries.
[11/23/18 10:34:21 AM PST] INFO MediaScannerService Scanned media library with 1250 entries.
[11/23/18 10:34:22 AM PST] INFO MediaScannerService Scanned media library with 1500 entries.
[11/23/18 10:34:22 AM PST] INFO MediaScannerService Scanned media library with 1750 entries.
[11/23/18 10:34:22 AM PST] INFO MediaScannerService Scanned media library with 2000 entries.
[11/23/18 10:34:22 AM PST] INFO MediaScannerService Scanned media library with 2250 entries.
[11/23/18 10:34:22 AM PST] INFO MediaScannerService Scanned media library with 2500 entries.
[11/23/18 10:34:22 AM PST] INFO MediaScannerService Scanned media library with 2750 entries.
[11/23/18 10:34:22 AM PST] INFO MediaScannerService Scanned media library with 3000 entries.
[11/23/18 10:34:22 AM PST] INFO MediaScannerService Scanned media library with 3250 entries.
[11/23/18 10:34:23 AM PST] INFO MediaScannerService Scanned media library with 3500 entries.
[11/23/18 10:34:23 AM PST] INFO MediaScannerService Scanned media library with 3750 entries.
[11/23/18 10:34:23 AM PST] INFO MediaScannerService Scanned media library with 4000 entries.
[11/23/18 10:34:23 AM PST] INFO MediaScannerService Scanned media library with 4250 entries.
[11/23/18 10:34:23 AM PST] INFO MediaScannerService Scanned media library with 4500 entries.
[11/23/18 10:34:23 AM PST] INFO MediaScannerService Scanned media library with 4750 entries.
[11/23/18 10:34:23 AM PST] INFO MediaScannerService Scanned media library with 5000 entries.
[11/23/18 10:34:24 AM PST] INFO MediaScannerService Scanned media library with 5250 entries.
[11/23/18 10:34:24 AM PST] INFO MediaScannerService Scanned media library with 5500 entries.
[11/23/18 10:34:24 AM PST] INFO MediaScannerService Scanned media library with 5750 entries.
[11/23/18 10:34:24 AM PST] INFO MediaScannerService Scanned media library with 6000 entries.
[11/23/18 10:34:24 AM PST] INFO MediaScannerService Scanned media library with 6250 entries.
[11/23/18 10:34:24 AM PST] INFO MediaScannerService Scanned media library with 6500 entries.
[11/23/18 10:34:24 AM PST] INFO MediaScannerService Scanned media library with 6750 entries.
[11/23/18 10:34:25 AM PST] INFO MediaScannerService Scanned media library with 7000 entries.
[11/23/18 10:34:25 AM PST] INFO MediaScannerService Scanned media library with 7250 entries.
[11/23/18 10:34:25 AM PST] INFO MediaScannerService Scanned media library with 7500 entries.
[11/23/18 10:34:25 AM PST] INFO MediaScannerService Scanned media library with 7750 entries.
[11/23/18 10:34:25 AM PST] INFO MediaScannerService Scanned media library with 8000 entries.
[11/23/18 10:34:25 AM PST] INFO MediaScannerService Scanned media library with 8250 entries.
[11/23/18 10:34:26 AM PST] INFO MediaScannerService Scanned media library with 8500 entries.
[11/23/18 10:34:26 AM PST] INFO MediaScannerService Scanned media library with 8750 entries.
[11/23/18 10:34:26 AM PST] INFO MediaScannerService Scanned media library with 9000 entries.
[11/23/18 10:34:26 AM PST] INFO MediaScannerService Scanned media library with 9250 entries.
[11/23/18 10:34:26 AM PST] INFO MediaScannerService Scanned media library with 9500 entries.
[11/23/18 10:34:26 AM PST] INFO MediaScannerService Scanned media library with 9750 entries.
[11/23/18 10:34:26 AM PST] INFO MediaScannerService Scanned media library with 10000 entries.
[11/23/18 10:34:27 AM PST] INFO MediaScannerService Scanned media library with 10250 entries.
[11/23/18 10:34:27 AM PST] INFO MediaScannerService Scanned media library with 10500 entries.
[11/23/18 10:34:27 AM PST] INFO MediaScannerService Scanned media library with 10750 entries.
[11/23/18 10:34:27 AM PST] INFO MediaScannerService Scanned media library with 11000 entries.
[11/23/18 10:34:27 AM PST] ERROR MediaScannerService Failed to scan media library.

Any ideas on why or how to fix?