This corresponds to the following protocol messages sent from the frontend to the backend: Parse (P) with an empty string for the statement name and the query Bind (B) with C_1 for the portal, an ...

Matrix stack not popped after rendering item <item.we_want_to.find_out> (<item_we_want_to_find_out>). If you run again with 3.4.0, have it crash, and then post your latest log from before the crash, I ...