http://localhost:8080/MDLDemo is raising an error

[Ducasse]

In Pharo 10 with Seaside v3.4.8 and MDL v2.2.1
This is because when there is a loading error class initialize are not executed so singleton are returning nil
It would be better to protect them with ifNil: self initialize.

[Ducasse]

May be this is linked with a problem with Seaside v3.4.8 and I will retry with v3.4.7