OMV odroidxu4 performance statisctics graphs

Hi!
I've just recently replaced the old image (kernel 3.10) with new image from SourceForge (kernel 4.9 ) At the moment
my xu4 works, but performance statistics graphs are all smiling faces Only the cpu usage graph is showing. When I pres the "Refresh"
button I get the following error:

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; omv-mkgraph 2>&1' with exit code '1': ERROR: unknown option '--slope-mode$'' in /usr/share/php/openmediavault/system/process.inc:175Stack trace:#0 /usr/share/openmediavault/engined/rpc/rrd.inc(54): OMV\System\Process->execute(Array)#1 /usr/share/php/openmediavault/rpc/serviceabstract.inc(528): OMVRpcServiceRrd->{closure}('/tmp/bgstatusv9...', '/tmp/bgoutputpS...')#2 /usr/share/openmediavault/engined/rpc/rrd.inc(56): OMV\Rpc\ServiceAbstract->execBgProc(Object(Closure))#3 [internal function]: OMVRpcServiceRrd->generate(NULL, Array)#4 /usr/share/php/openmediavault/rpc/serviceabstract.inc(124): call_user_func_array(Array, Array)#5 /usr/share/php/openmediavault/rpc/rpc.inc(86): OMV\Rpc\ServiceAbstract->callMethod('generate', NULL, Array)#6 /usr/sbin/omv-engined(536): OMV\Rpc\Rpc::call('Rrd', 'generate', NULL, Array, 1)#7 {main}

Do you have any idea what could be the reason for the error?
I'd be very grateful for any hint you have for me.

Thanks,
Damjan

Hi!
My graphs were showing just fine with the previous version (kernel 3.10.x) After a clean install with new image from SourceForge (kernel 4.9 ) performance statistics graphs are all smiling faces, only the cpu usage graphs are showing. When I pres the "Refresh" button I get the following error:

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; omv-mkgraph 2>&1' with exit code '1': ERROR: unknown option '--slope-mode$'' in /usr/share/php/openmediavault/system/process.inc:175Stack trace:#0 /usr/share/openmediavault/engined/rpc/rrd.inc(54): OMV\System\Process->execute(Array)#1 /usr/share/php/openmediavault/rpc/serviceabstract.inc(528): OMVRpcServiceRrd->{closure}('/tmp/bgstatusv9...', '/tmp/bgoutputpS...')#2 /usr/share/openmediavault/engined/rpc/rrd.inc(56): OMV\Rpc\ServiceAbstract->execBgProc(Object(Closure))#3 [internal function]: OMVRpcServiceRrd->generate(NULL, Array)#4 /usr/share/php/openmediavault/rpc/serviceabstract.inc(124): call_user_func_array(Array, Array)#5 /usr/share/php/openmediavault/rpc/rpc.inc(86): OMV\Rpc\ServiceAbstract->callMethod('generate', NULL, Array)#6 /usr/sbin/omv-engined(536): OMV\Rpc\Rpc::call('Rrd', 'generate', NULL, Array, 1)#7 {main}

Do you have any idea what could be the reason for the error?
I'd be very grateful for any hint you have for me.

Thanks,
Damjan

Thanks for your answer. so I'll have to "burn" the image again.
Is there a way to backup and restore current configuration to the new installation?
I heard there is a way to move the installation from SD to HD. Is there a tutorial for that?
Thanks again, Damjan

If so,I did it unintentionally. Is there a way to mend this?