Omv-engined segfault at webui login

HI,

I'm trying to troubleshoot this error:

Jan  4 10:52:18 openmediavault kernel: [61137.908877] omv-engined[24469]: segfault at 7ffa19e952c5 ip 000055ff21a1f63f sp 00007ffdc1066710 error 4 in php7.0[55ff217aa000+3b2000]

It is logged in syslog everytime I login into the web gui. It seems it doesn't affect any functionality, but I'd like to know if I can do something to get rid of it. (before you ask me, the server is running on a usb stick with flashmemory plugin installed.)

Thanks in advance.

After some research, I can say that maybe it is Virtualbox Plugin's fault.
The same error appears when I click on Virtual Machine section in the WebUI.

Any thoughts?