3 Ambiguous occurrence `null'
4 It could refer to either `null', defined at tcfail043.hs:57
5 or `Prelude.null', imported from Prelude at tcfail043.hs:16
8 Ambiguous occurrence `null'
9 It could refer to either `null', defined at tcfail043.hs:57
10 or `Prelude.null', imported from Prelude at tcfail043.hs:16
13 Ambiguous occurrence `null'
14 It could refer to either `null', defined at tcfail043.hs:57
15 or `Prelude.null', imported from Prelude at tcfail043.hs:16
18 Ambiguous occurrence `and'
19 It could refer to either `and', defined at tcfail043.hs:42
20 or `Prelude.and', imported from Prelude at tcfail043.hs:16
23 Ambiguous occurrence `and'
24 It could refer to either `and', defined at tcfail043.hs:42
25 or `Prelude.and', imported from Prelude at tcfail043.hs:16
28 Ambiguous occurrence `null'
29 It could refer to either `null', defined at tcfail043.hs:57
30 or `Prelude.null', imported from Prelude at tcfail043.hs:16
34 Compilation had errors