I came across the same error and could not figure it out either.

node-cache-manager was only updated to newest version within these last days. https://github.com/node-cache-manager/node-cache-manager/tags

So I updated the package.json to use version 5.x

"cache-manager": "^5.0.0", And now the caching works as expected.

Keep an eye on the package issue queue for further updates.