We have to update the distro ScriptID and DeployementID with ScriptID and Deployement ID of the latest version of the Restlet script or which version we have used for.
For example:

Repalce the below
"scriptId": "customscript_ns_sca_deployer_2020_2_0",
"deployId": "customdeploy_ns_sca_deployer_2020_2_0",

If you’re using the latest version you have to update the scriptID and deploymentID to
“scriptId”: “customscript_ns_sca_deployer_2021_2_0”,
“deployId”: “customdeploy_ns_sca_deployer_2021_2_0”,