Root service is stopping.
the BESRelay.log reports the limit issue:
12:21:20 +0100 - /cgi-bin/bfenterprise/postfile.exe (3948930816) - CompressedFileMaxSize limit of 20971520 bytes reached decompressing file ‘/var/opt/BESServer/UploadManagerData/BufferDir/Temp/_ac7e3eabef663ef559386dee9d48c43a314182b1’
The message implies you’re uploading a large file through the Upload & Archive Manager. Evaluate whether that really is necessary (given large uploads can cause some performance impacts).