NPE at JsonCodec.decodeWithoutTypeInfo

Hi,

We receive a strange exception in the application after the following request:
2022-12-20 04:30:09.100 DEBUG 1 — [nio-8080-exec-4] o.s.w.f.CommonsRequestLoggingFilter : REQUEST DATA : POST /webgui/?v-r=uidl&v-uiId=0, payload={“csrfToken”:“99924f30-e367-4b81-8e93-c67573e4a38c”,“rpc”:[{“type”:“event”,“node”:1074,“event”:“value-changed”,“data”:{}},{“type”:“event”,“node”:1212,“event”:“opened-changed”}],“syncId”:43,“clientId”:32}]

And the exception is:
at com.vaadin.flow.internal.JsonCodec.decodeWithoutTypeInfo(JsonCodec.java:222) ~[flow-server-2.7.20.jar!/:2.7.20]
2022-12-20 05:30:09
java.lang.NullPointerException: null

Anybody has seen familiar? it is a combobox.

Can you share the code for the ComboBox? What Vaadin version are you using?