What happened when the bug occurred?
After rejoining the server, I got an error whenever I tried to sprint. I eventually crashed. I did nothing special to get this, so there's nothing to help your reproduce it; sorry.
Picture/Console Errors:
[ERROR] gamemodes/ocrp2/gamemode/client/stamina.lua:59: attempt to compare nil with number
1. v - gamemodes/ocrp2/gamemode/client/stamina.lua:59
2. unknown - lua/includes/modules/hook.lua:82