Errors in log file

[ebrandon]

I get many many errors of this type in the logs.

[10/31/18 9:09:59 PM PDT] WARN RESTFilter Error in REST API: EofException
[10/31/18 9:09:59 PM PDT] ERROR JAXBWriter Failed to marshal JAXB
[10/31/18 9:09:59 PM PDT] ERROR RESTFilter Failed to write error response.

Also these are very common:
[10/31/18 9:11:54 PM PDT] WARN CoverArtController Failed to process cover art /Volumes/HR Music/Classical [Hi Rez]/Audiophile Recordings/2004 - Marches & Fanfares - Frederick Fennell & The Cleveland Symphonic Winds - (Telarc) [SACD 2.0]/Cover.png: java.lang.OutOfMemoryError: Java heap space

Should I be worried about either one? Can I do anything to stop getting these frequent errors?

Thanks!