Hey
I managed to fix this if your interested.
If you use 7zip to extract the OVA you can edit the OVF using notepad. <-- this whole section below:
<!--<DeploymentOptionSection>
<Info>vSRX RAM Deployment Options</Info>
<Configuration ovf:id="Default" ovf:default="true">
<Label>Default</Label>
<Description>
2 CPUs
</Description>
</Configuration>
<Configuration ovf:id="3GvRAM">
<Label>3G vRAM</Label>
<Description>
3G Memory (recommended if UTM and/or IDP are enabled)
</Description>
</Configuration>
<Configuration ovf:id="4GvRAM">
<Label>4G vRAM</Label>
<Description>
4G Memory
</Description>
</Configuration>
<Configuration ovf:id="1GvRAM">
<Label>1G vRAM</Label>
<Description>
1G Memory
</Description>
</Configuration>
</DeploymentOptionSection>
-->
You need to then delete the .cert, .mf and .pem file from the folder.
Go back to VMware Workstation > Open > Browse to extracted folder and open the new OVF with the changes and it imports fine. Running three on version 14.1.1 at the moment.
Hope this helps.