https://www.polygon.com/2018/3/27/17168144/sea-of-thieves-server-issues-allmondbeard-chests-world-record

Rare said it’s committed to working on Sea of Thieves’ copious server errors, but there’s a particularly devastating one that remains unresolved: AllmondBeard, an error code that’s robbing players not only of their progress, but also of their record amounts of loot.

AllmondBeard — one of several “pesky ThingBeard errors” listed on Sea of Thieves’ support site — occurs when players’ “connection to Xbox Live and/or the Sea of Thieves services has been disrupted or lost.” Considering the difficulty Rare’s had in stabilizing the online multiplayer game’s network connectivity since launch, the error message is common among players.