ERROR system error 13 (Permission denied); when accessing http://<serverIP>:8787

Login screen does not appear just a spinning wheel. Them unable to connect to service.

/var/log/messages
Oct 11 18:02:40 ip-10-2-237-74 rserver[24032]: ERROR system error 13 (Permission denied); OCCURRED AT: rstudio::core::Error rstudio::core::system::launchChildProcess(std::string, std::string, rstudio::core::system::ProcessConfig, rstudio::core::system::ProcessConfigFilter, PidType*) /root/rstudio/src/cpp/core/system/PosixSystem.cpp:1693; LOGGED FROM: rstudio::core::Error rstudio::core::system::launchChildProcess(std::string, std::string, rstudio::core::system::ProcessConfig, rstudio::core::system::ProcessConfigFilter, PidType*) /root/rstudio/src/cpp/core/system/PosixSystem.cpp:1694

No /var/lib/rstudio-server/monitor/log directory

Tried both 1.1.456 and 1.2.5001

This is on RHEL 8.0
Have no idea what permission is missing.