Error log does not display any message

Hey guys,

Am not sure why but I have an error log in my root directory that shows the event times but does not list that actual error that is happening. Is this normal?

[20-Oct-2018 23:00:52 UTC]

[20-Oct-2018 23:01:09 UTC]

[22-Oct-2018 04:48:11 UTC]

[22-Oct-2018 04:48:11 UTC]

[28-Oct-2018 01:57:00 UTC]

[29-Oct-2018 07:17:31 UTC]