Your first post shows a prompt of XXX@foxbert, suggesting a login with a functional id you chose to obfuscate. Can you post the results of
ls -ld /root/home/kibana-6.2.4/node/bin
ls -ld /root/home/kibana-6.2.4/node
ls -ld /root/home/kibana-6.2.4
ls -ld /root/home
ls -ld /root
If the last one does not include o+x then "chmod o+x /root".
Don't do 777. If o needs x then chmod o+x 701 might be fine.