After update my server to build 1.5.1 7809 i saw this: 
Resource bone_attach flooding errors in console(1 error per second) 
 
ERROR: bone_attach/attach_func.lua:116: cannot resume dead coroutine [string "?"] 
 
Before the that flooding, i saw this error 
 
ERROR: bone_attach/attach_func.lua:116: invalid key to 'next' [string "?"] 
 
Here is a function,errors in last line(116) 
 
function forgetNonExistingPeds() 
    local checkedcount = 0 
    while true do 
        for element,ped in pairs(attached_ped) do 
            if not isElement(ped) then clearAttachmentData(element) end 
            checkedcount = checkedcount+1 
            if checkedcount >= 1000 then 
                coroutine.yield() 
                checkedcount = 0 
            end 
        end 
        coroutine.yield() 
    end 
end 
clearing_nonexisting_peds = coroutine.create(forgetNonExistingPeds) 
setTimer(function() coroutine.resume(clearing_nonexisting_peds) end,1000,0) 
 
Thanks for any support