M0002 undefined name

example $ marmot build .
error[M0002]: undefined: fmt.Printn
 --> ./main.go:9:6
  |
9 |     fmt.Printn("hi")
  |         ^^^^^^ not declared by package `fmt`
  |
help: use `fmt.Println` (check it)
  |
9 -     fmt.Printn("hi")
9 +     fmt.Println("hi")
  |

error[M0004]: declared and not used: n
  --> ./main.go:10:2
   |
10 |     n := strings.Count(s, "a") // strings not imported
   |     ^ declared here but never used
   |
help: assign the value to `_`
   |
10 -     n := strings.Count(s, "a") // strings not imported
10 +     _ = strings.Count(s, "a") // strings not imported
   |

error[M0002]: undefined: s
  --> ./main.go:10:21
   |
10 |     n := strings.Count(s, "a") // strings not imported
   |                        ^ not declared in this scope
   |
help: use `n` (check it)
   |
10 -     n := strings.Count(s, "a") // strings not imported
10 +     n := strings.Count(n, "a") // strings not imported
   |

error: build failed with 3 errors
1 error can be fixed automatically: run `marmot fix`
for more about an error, run `marmot explain M0002`

package main

import (
	"fmt"
	"strings"
)

func main() {
	fmt.Printn("hi")
	n := strings.Count(s, "a") // strings not imported
}