Cool, I'm glad we've found these potential culprit...

# jackson-kotlin

[Czar]

Cool, I'm glad we've found these potential culprits. And I couldn't resist and finished debugging anywhay, the problem was that Jsr310Module is deprecated in 2.6.3, so I removed it without reading docs, turns out it is not simply deprecated it is deprecated in favour of JavaTimeModule, so after I put the latter in place, everything started to work like a charm! simple smile TY