This is what I get after trying to start the daemon manually via CLI
root@homeserver:~# omv-engined -d -f
PHP Fatal error: Uncaught exception 'OMVException' with message 'Failed to load configuration (Fatal error 9: PCDATA invalid Char value 31 (line=1231, column=18); Fatal error 9: Input is not proper UTF-8, indicate encoding !
Bytes: 0x8B 0x08 0x3C 0x2F (line=1231, column=19); Fatal error 9: PCDATA invalid Char value 8 (line=1231, column=20); Fatal error 9: PCDATA invalid Char value 15 (line=1233, column=27); Fatal error 9: PCDATA invalid Char value 19 (line=1233, column=32); Fatal error 9: PCDATA invalid Char value 8 (line=1233, column=36); Fatal error 9: PCDATA invalid Char value 29 (line=1233, column=49); Fatal error 9: PCDATA invalid Char value 20 (line=1233, column=67); Fatal error 9: PCDATA invalid Char value 21 (line=1233, column=76); Fatal error 9: PCDATA invalid Char value 16 (line=1233, column=81); Fatal error 9: PCDATA invalid Char value 31 (line=1233, column=87); Fatal error 9: PCDATA invalid Char value 17 (line=1233, column=104); Fatal error 9: PCDATA invalid Char value 26 (line=1233, column=107); Fatal error 9: PC in /usr/share/php/openmediavault/config.inc on line 576