As per the looking at the log file:-
[Microsoft][ODBC SQL Server Driver]Query timeout expired' in D:\Program Files (x86)\Symantec\Symantec Endpoint Protection Manager\Php\Include\Common\ado.php:515
The issue resides in DB configuration settings. Few queries:-
1) Have you performed any configuration changes with the DB?
2)If yes,can you reconfigure using the DB configuration using "Management Server Configuration Wizard"
"C:\Windows\System32\cmd.exe /c "C:\Program Files\Symantec\Symantec Endpoint Protection Manager\bin\sca.bat"