Which management interface, nethgui (port 980) or cockpit (port 9090)?
What do you see when trying to access the web management interface (blank page, error message…)?
Jan 24 23:18:23 dc1.mehp.com httpd[5288]: (30)Read-only file system: AH00091: httpd: could not open error log file /var/log/httpd-admin/error_log.
Jan 24 23:18:23 dc1.mehp.com httpd[5288]: AH00015: Unable to open logs
journalctl shall provide you with clues for the cause of read-only file system. If the error happened after manually editing fstab then you can temporarily try by commenting those entries.
Access to server-manger is an effect of the read-only filesystem.
Did you try any of the above suggestions (booting with older kernel, commenting manually added fstab entries, searched journalctl)?
journalctl -b -x
or with the command suggested on-screen when boot fails.