Have similar issue in RHEL7 with plot

Locale on the machine
LANG=en_US.UTF-8
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC="en_US.UTF-8"
LC_TIME="en_US.UTF-8"
LC_COLLATE="en_US.UTF-8"
LC_MONETARY="en_US.UTF-8"
LC_MESSAGES="en_US.UTF-8"
LC_PAPER="en_US.UTF-8"
LC_NAME="en_US.UTF-8"
LC_ADDRESS="en_US.UTF-8"
LC_TELEPHONE="en_US.UTF-8"
LC_MEASUREMENT="en_US.UTF-8"
LC_IDENTIFICATION="en_US.UTF-8"
LC_ALL=en_US.UTF-8
Locale -a output
C
en_US
en_US.iso88591
en_US.iso885915
en_US.utf8
POSIX
sessionInfo output
R version 3.3.3 (2017-03-06)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Red Hat Enterprise Linux Server 7.3 (Maipo)
locale:
[1] LC_CTYPE=en_US.UTF-8
[2] LC_NUMERIC=C
[3] LC_TIME=en_US.UTF-8
[4] LC_COLLATE=en_US.UTF-8
[5] LC_MONETARY=en_US.UTF-8
[6] LC_MESSAGES=en_US.UTF-8
[7] LC_PAPER=en_US.UTF-8
[8] LC_NAME=C
[9] LC_ADDRESS=C
[10] LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_US.UTF-8
[12] LC_IDENTIFICATION=C
attached base packages:
[1] stats graphics grDevices utils datasets base
other attached packages:
[1] RevoUtilsMath_10.0.0
loaded via a namespace (and not attached):
[1] RevoUtils_10.0.
capabilities
jpeg png tiff tcltk X11 aqua
TRUE TRUE TRUE TRUE FALSE FALSE
http/ftp sockets libxml fifo cledit iconv
TRUE TRUE TRUE TRUE FALSE TRUE
NLS profmem cairo ICU long.double libcurl
TRUE TRUE TRUE TRUE TRUE TRUE