I am using phpvirtualbox-6 adaptation for virtualbox6 (6.0.8r130520)
https://github.com/pasha1st/phpvirtualbox-6/

It's working fine except for the snapshots : when I try to take a snapshot, the vm is paused then resumed but no snapshot happens (snapshots work fine on the command line)

Any hint on how to debug the issue?

Below the vm log

00:25:10.849817 Changing the VM state from 'RUNNING' to 'SUSPENDING'
00:25:10.850951 AIOMgr: Endpoint for file '/home/vbox/VirtualBox VMs/BioSQL/CentOS7 SQL.vdi' (flags 000c0781) created successfully
00:25:10.864976 AIOMgr: Endpoint for file '/home/vbox/VirtualBox VMs/BioSQL/CentOS7 SQL-DATA.vdi' (flags 000c0781) created successfully
00:25:10.910568 PDMR3Suspend: 60 683 860 ns run time
00:25:10.910585 Changing the VM state from 'SUSPENDING' to 'SUSPENDED'
00:25:10.910596 Console: Machine state changed to 'Paused'
00:25:11.271861 Changing the VM state from 'SUSPENDED' to 'RESUMING'
00:25:11.272057 AIOMgr: Endpoint for file '/home/vbox/VirtualBox VMs/BioSQL/CentOS7 SQL.vdi' (flags 000c0723) created successfully
00:25:11.272983 AIOMgr: Endpoint for file '/home/vbox/VirtualBox VMs/BioSQL/CentOS7 SQL-DATA.vdi' (flags 000c0723) created successfully
00:25:11.274171 Changing the VM state from 'RESUMING' to 'RUNNING'
00:25:11.274188 Console: Machine state changed to 'Running'
00:25:52.055090 AIOMgr: Flush failed with VERR_INVALID_PARAMETER, disabling async flushes
00:25:54.712085 AIOMgr: Flush failed with VERR_INVALID_PARAMETER, disabling async flushes

Thanks for your help