PHP error in gwlb.inc (potential race)
I can't reproduce this reliably, but occasionally there is a PHP error at boot time:
[26-Jan-2021 08:14:22 America/New_York] PHP Warning: file_get_contents(/tmp/ovpnc1_router): failed to open stream: No such file or directory in /etc/inc/gwlb.inc on line 1541
The line in question is protected by a test that checks if the file exists before opening, so it must be a race condition where the file is removed temporarily by another process at just the wrong time.
By the time the boot completes everything is OK, so we should probably suppress that error.