3 Ambiguous occurrence `and'
4 It could refer to: and: defined at tcfail043.hs:42
5 PrelList.and: imported from Prelude at tcfail043.hs:16
8 Ambiguous occurrence `null'
9 It could refer to: null: defined at tcfail043.hs:57
10 PrelList.null: imported from Prelude at tcfail043.hs:16
13 Ambiguous occurrence `null'
14 It could refer to: null: defined at tcfail043.hs:57
15 PrelList.null: imported from Prelude at tcfail043.hs:16
18 Ambiguous occurrence `null'
19 It could refer to: null: defined at tcfail043.hs:57
20 PrelList.null: imported from Prelude at tcfail043.hs:16
23 Ambiguous occurrence `null'
24 It could refer to: null: defined at tcfail043.hs:57
25 PrelList.null: imported from Prelude at tcfail043.hs:16
28 Ambiguous occurrence `and'
29 It could refer to: and: defined at tcfail043.hs:42
30 PrelList.and: imported from Prelude at tcfail043.hs:16
33 Ambiguous occurrence `and'
34 It could refer to: and: defined at tcfail043.hs:42
35 PrelList.and: imported from Prelude at tcfail043.hs:16
38 Ambiguous occurrence `and'
39 It could refer to: and: defined at tcfail043.hs:42
40 PrelList.and: imported from Prelude at tcfail043.hs:16
43 Ambiguous occurrence `null'
44 It could refer to: null: defined at tcfail043.hs:57
45 PrelList.null: imported from Prelude at tcfail043.hs:16
48 Ambiguous occurrence `null'
49 It could refer to: null: defined at tcfail043.hs:57
50 PrelList.null: imported from Prelude at tcfail043.hs:16
53 Compilation had errors