[Koha] Koha upgrade 22.11.6 to 23.5.00 upgrade-schema error

Hi All Just upgraded tonight from Koha 212.11.06.000 to 23.05.00 That all went fine. The About Koha page now says: "Warning: - Upgrade to 22.12.00.041 [09:43:21]: Bug 30649 - Increase the vendor EDI account password field to 256 characters ERROR: Exception 'Koha::Exceptions::MissingParameter' thrown 'No encryption_key in koha-conf.xml' Please help. Thanking you.. Librarian, MAMCET <http://mamcet.com/> Trichy-Chennai Trunk Road, Siruganur, Tiruchirappalli-621 105.