this one works, I tested it

module/io.lua

@@ -34,7 +34,7 @@ end
 
 function print(...) -- Writes each argument to the default output stream, separated by space.
  for k,v in ipairs({...}) do
-  io.write(tostring(v).."\t")
+  io.write((k>1 and "\t" or "")..tostring(v))
  end
  io.write("\n")
 end

service/fsmanager.lua

@@ -18,7 +18,7 @@ function fsmanager.start()
  run = true
  return os.spawn(function()
   for addr, _ in component.list("filesystem") do
-   mount(addr)
+   fsmanager.mount(addr)
   end
   while run do
    local tE = {coroutine.yield()}