Assertion `has_property(property_t::clock)' failed.

[matt32106]

On some replays, I get this error:

hippo@hippo-camp:~/projects/wotreplay-parser$ bin/wotreplay-parser --parse --root ./replays --type gif --input 20210213_1801_italy-It10_P43_bis_04_himmelsdorf.wotreplay --output test.gif
wotreplay-parser: /home/hippo/projects/wotreplay-parser/src/packet.cpp:23: float wotreplay::packet_t::clock() const: Assertion `has_property(property_t::clock)' failed.
Aborted (core dumped)

My cpp days are too far away to be able to debug myself. Any clue?