Incompatibility with Player Roles

[Slimmeyy]

When a player with both a nickname and a player role dies, the respawn button does not work, instead throwing a lengthy error in the server console.
Removing the player role through the server console does not fix the issue (and neither does restarting the server).
drogtor-player-roles respawn error log.txt

Versions:
Minecraft: 1.18.1
Fabric: 0.12.12
Drogtor: 1.1.2
Player Roles: 1.5.1

Update: the only way I've found to fix this is to remove either the entire .dat file of said player (which holds the Drogtor nickname), or the player_roles file, and then restarting the server. Editing the player's .dat file to remove the nickname and then restarting the server does not work.