The sstate_checksum field is empty
sstate_checksum is fixed in webhob-poky/master-1_5-1809
Verified fixed in webhob-poky/master-1_5-2009
Not working on webhob-poky/master:aa7bec2e9dffd6901ebe3accf748ce458d1481a3
Verified in webhob-poky/master:f5896b40ced9a7ebbd7428f8792dd063cd095bfb
Merged in origin/master and in origin/dora-toaster.
Verified fixed in: dora-toaster: 4b64eb444ab065915267d8040bf878ecae9b00c4 master: 76751a03b1475f22499c488395274453096b9c38