FileMaker Server 17.0.2 on macOS Sierra (10.12.6) doesn't properly handle transition from daylight saving time while performing a scheduled backup:
We got this error message:
FileMaker Server 17.0.2 on RTM Server reported the following event:
2018-10-28 02:01:22.564 +0100 Error 729 RTM Server Backup aborted by user or due to error; some incomplete files may be left in destination. (20402)
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As can be seen from the message, this happened *after* the change to normal time.