[Zope] Site Error: http://zope.org/Products/all_products?batch_size%3Aint%3Arequired=200&sort_on=Title

[Jørgen Jørgensen]

Site error

This site encountered an error trying to fulfill your
request. The errors were:
Error Details
Error Type
CatalogError
Error Value
The index chosen for sort_on is not capable of being
used as a sort index.


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