query crashes handler

[adameat]

the query is from the documentation:

SELECT -- One field was removed and one field was added: ("three":null, "two": "42")
    CAST(<|one:"8912", two:42|> AS Struct<two:Utf8, three:Date?>);

the version is stable-24-3-15

1. fix types rendering
2. catch exception and return error instead abort()