Hello Terry,
The error you’re facing is due to the Keystore file missing. Did you download a backup from a cloud environment (without files) and restored it locally?
Since one of the latest versions of the SAML module, the ASU microflow has been upgraded with a migration microflow, since you can now have keystores for each configured IdP. It expects the keystore file to be present if configured.
In case my above assumption is correct, I would recommend removing the SAML ASU from your main ASU flow. The application will then boot correctly, then you can either remove the SAML config locally or upload a correct keystore file. Afterwards, don't forget to re-add the SAML ASU to your main ASU.
I locally deleted the record in my DB under saml20$keystore. That seems to work as well.