I am trying to setup mysql plugin I have tried multiple times where i am up to this time is plugin is installed I have set the data directory to a location on a different drive using this guide but every time I try to enable the plugin I get this error code I honestly have run out of options with this very frustrating 
Any help would be really appreciated thanks in advanced 
Code
Failed to execute command 'export PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin; export LANG=C; systemctl start 'mysql.service' 2>&1' with exit code '1': Job for mysql.service failed. See 'systemctl status mysql.service' and 'journalctl -xn' for details.
Error #0:
exception 'OMV\ExecException' with message 'Failed to execute command 'export PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin; export LANG=C; systemctl start 'mysql.service' 2>&1' with exit code '1': Job for mysql.service failed. See 'systemctl status mysql.service' and 'journalctl -xn' for details.' in /usr/share/php/openmediavault/system/process.inc:175
Stack trace:
#0 /usr/share/php/openmediavault/system/systemctl.inc(86): OMV\System\Process->execute(Array, 1)
#1 /usr/share/php/openmediavault/system/systemctl.inc(104): OMV\System\SystemCtl->exec('start', NULL, false)
#2 /usr/share/openmediavault/engined/module/mysql.inc(107): OMV\System\SystemCtl->enable(true)
#3 /usr/share/openmediavault/engined/rpc/config.inc(194): OMV\Engined\Module\MySql->startService()
#4 [internal function]: OMVRpcServiceConfig->applyChanges(Array, Array)
#5 /usr/share/php/openmediavault/rpc/serviceabstract.inc(124): call_user_func_array(Array, Array)
#6 /usr/share/php/openmediavault/rpc/serviceabstract.inc(150): OMV\Rpc\ServiceAbstract->callMethod('applyChanges', Array, Array)
#7 /usr/share/php/openmediavault/rpc/serviceabstract.inc(528): OMV\Rpc\ServiceAbstract->OMV\Rpc\{closure}('/tmp/bgstatusca...', '/tmp/bgoutputjY...')
#8 /usr/share/php/openmediavault/rpc/serviceabstract.inc(151): OMV\Rpc\ServiceAbstract->execBgProc(Object(Closure))
#9 /usr/share/openmediavault/engined/rpc/config.inc(213): OMV\Rpc\ServiceAbstract->callMethodBg('applyChanges', Array, Array)
#10 [internal function]: OMVRpcServiceConfig->applyChangesBg(Array, Array)
#11 /usr/share/php/openmediavault/rpc/serviceabstract.inc(124): call_user_func_array(Array, Array)
#12 /usr/share/php/openmediavault/rpc/rpc.inc(86): OMV\Rpc\ServiceAbstract->callMethod('applyChangesBg', Array, Array)
#13 /usr/sbin/omv-engined(536): OMV\Rpc\Rpc::call('Config', 'applyChangesBg', Array, Array, 1)
#14 {main}