That version is ancient and should be updated.
Here is my service file as an example:
felix@gemini:/etc/systemd/system$ cat rclone.service
[Unit]
Description=RClone Service
Wants=network-online.target
After=network-online.target
[Service]
Type=notify
Environment=RCLONE_CONFIG=/opt/rclone/rclone.conf
KillMode=none
RestartSec=5
ExecStart=/usr/bin/rclone mount gcrypt: /GD \
# This is for allowing users other than the user running rclone access to the mount
--allow-other \
# Google Drive is a polling remote so this value can be set very high and any changes are detected via polling.
--dir-cache-time 1000h \
# To log to syslog as well
--syslog \
# I reduce the poll internval down to 15 seconds as this makes changes appear fast the API quotas per day are huge
--poll-interval 15s \
# This is setting the file permission on the mount to user and group have the same access and other can read
--umask 002 \
# Please set this to your own value below
--user-agent randomappname102 \
# This sets up the remote control daemon so you can issue rc commands locally
--rc \
# This is the default port it runs on
--rc-addr :5572 \
# no-auth is used as no one else uses my server and it is not a shared seedbox
--rc-no-auth \
# The local disk used for caching
--cache-dir=/cache \
# This is used for caching files to local disk for streaming
--vfs-cache-mode full \
# This limits the cache size to the value below
--vfs-cache-max-size 750G \
# This adds a little buffer for read ahead
--vfs-read-ahead 256M \
# This limits the age in the cache if the size is reached and it removes the oldest files first
--vfs-cache-max-age 1000h \
# This sets a per file bandwidth control and I limit this to a little bigger than my largest bitrate I'd want to play
--bwlimit-file 16M
ExecStop=/bin/fusermount -uz /GD
ExecStartPost=/usr/bin/rclone rc vfs/refresh recursive=true --rc-addr 127.0.0.1:5572 _async=true
Restart=on-failure
User=felix
Group=felix
[Install]
WantedBy=multi-user.target