VM's not starting

Hi, I’ve just set up my first environment with OpenNebula. But when trying to start a VM from an Image I get the following error log:

Tue May 28 16:10:46 2019 [Z0][VM][I]: New state is ACTIVE
Tue May 28 16:10:46 2019 [Z0][VM][I]: New LCM state is PROLOG
Tue May 28 16:13:09 2019 [Z0][VM][I]: New LCM state is BOOT
Tue May 28 16:13:09 2019 [Z0][VMM][I]: Generating deployment file: /var/lib/one/vms/8/deployment.0
Tue May 28 16:13:10 2019 [Z0][VMM][I]: Successfully execute transfer manager driver operation: tm_context.
Tue May 28 16:13:10 2019 [Z0][VMM][I]: ExitCode: 0
Tue May 28 16:13:10 2019 [Z0][VMM][I]: Successfully execute network driver operation: pre.
Tue May 28 16:13:10 2019 [Z0][VMM][I]: Command execution fail: cat << EOT | /var/tmp/one/vmm/kvm/deploy ‘/var/lib/one//datastores/0/8/deployment.0’ ‘oneworker01’ 8 oneworker01
Tue May 28 16:13:10 2019 [Z0][VMM][I]: error: Failed to create domain from /var/lib/one//datastores/0/8/deployment.0
Tue May 28 16:13:10 2019 [Z0][VMM][I]: error: invalid argument: could not find capabilities for arch=x86_64 domaintype=kvm
Tue May 28 16:13:10 2019 [Z0][VMM][E]: Could not create domain from /var/lib/one//datastores/0/8/deployment.0
Tue May 28 16:13:10 2019 [Z0][VMM][I]: ExitCode: 255
Tue May 28 16:13:10 2019 [Z0][VMM][I]: Failed to execute virtualization driver operation: deploy.
Tue May 28 16:13:10 2019 [Z0][VMM][E]: Error deploying virtual machine: Could not create domain from /var/lib/one//datastores/0/8/deployment.0
Tue May 28 16:13:10 2019 [Z0][VM][I]: New LCM state is BOOT_FAILURE

I have no idea how to fix this as i’m quite inexperienced with OpenNebula. Thanks in advance!

ONE Version: 5.4.13
OS: Ubuntu 16.04.6
Hypervisor: KVM

Your host is not 64 bit or do not have virtualization enabled. Check your motherboard manual/vendor how to enbale the virtualization.

BR,
Anton Todorov

Hello Anton,
Virtualization is on:
INFO: /dev/kvm exists
KVM acceleration can be used

And Linux is 64 bit:
4.4.0-116-generic #140-Ubuntu SMP Mon Feb 12 21:23:04 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux