Errors

once people join my server they crash with this message:

these errors pop on the server too if you do manage to join:

[ERROR] lua/includes/modules/markup.lua:245: attempt to index upvalue ‘utf8’ (a nil value)

  1. Parse - lua/includes/modules/markup.lua:245
  2. PrintWeaponInfo - gamemodes/base/entities/weapons/weapon_base/cl_init.lua:80
    3. unknown - gamemodes/base/entities/weapons/weapon_base/cl_init.lua:56

[ERROR] lua/includes/modules/markup.lua:245: attempt to index upvalue ‘utf8’ (a nil value)

  1. Parse - lua/includes/modules/markup.lua:245
  2. PrintWeaponInfo - gamemodes/base/entities/weapons/weapon_base/cl_init.lua:80
    3. unknown - gamemodes/base/entities/weapons/weapon_base/cl_init.lua:56

[ERROR] lua/includes/modules/markup.lua:245: attempt to index upvalue ‘utf8’ (a nil value)

  1. Parse - lua/includes/modules/markup.lua:245
  2. PrintWeaponInfo - gamemodes/base/entities/weapons/weapon_base/cl_init.lua:80
    3. unknown - gamemodes/base/entities/weapons/weapon_base/cl_init.lua:56

Please help!