Custom scripts and signature check Openvas 9

Signature check for custom scripts in Openvas 9?

I have created a script or modified a existing script and signed them with my local key. But, there is a error when restarting openvassd. It says “No checksum for this nasl script” and “Unable to load”
– “No checksum for /var/lib/openvas/plugins/x.nasl”.
For a modified script it says “Checksum not matching, unable to load”.

I followed the link

I signed the key as in link and set trust to “ultimate” for all the keys I have. Also to “Greenbone Community Feed integrity key” according to the link above.

Please help me with the signing of any new custom or modified scripts in Openvas 9.

Closing as a duplicate of the following thread: