Getting error Invalid "VLAN TAG Range" configuration

[aslamds]

I am trying to create Private network between VMs.
While creating getting the error " Invalid "VLAN TAG Range" configuration "

Kernel Version Linux 4.15.18-30-pve #1 SMP PVE 4.15.18-58 (Fri, 12 Jun 2020 13:53:01 +0200)

PVE Manager Version pve-manager/5.4-15/d0ec33c6 Kernel Version​ Linux 4.15.18-30-pve #1 SMP PVE 4.15.18-58 (Fri, 12 Jun 2020 13:53:01 +0200)​

 

[ph0x]

Could you format your posting a bit more readable?
What did you enter when you received this error?