Skript 11 errors, can anyone help me?

[Nicore]

#water
command /water:
 permission:az.water
 trigger:
  if no block in radius 5 in front of the player
  set player's walk speed to 0
  set player's fly speed to 0
  set block at block 1 north player facing to water
  set block at block 2 north player facing to water
  set block at block 3 north player facing to water
  set block at block 4 north player facing to water
  set block at block 5 north player facing to water
  wait 5 seconds
  set block at block 1 north player facing to air
  set block at block 2 north player facing to air
  set block at block 3 north player facing to air
  set block at block 4 north player facing to air
  set block at block 5 north player facing to air
  set player's walk speed to 1
  set player's walk speed to 1

Errors

Line 74: Can't understand this condition/effect: if no block in radius 5 in front of the player (script.sk, line 74: if no block in radius 5 in front of the player')

Line 77: Can't understand this condition/effect: set block at block 1 north player facing to water (script.sk, line 77: set block at block 1 north player facing to water')

Line 78: Can't understand this condition/effect: set block at block 2 north player facing to water (script.sk, line 78: set block at block 2 north player facing to water')

Line 79: Can't understand this condition/effect: set block at block 3 north player facing to water (script.sk, line 79: set block at block 3 north player facing to water')

Line 80: Can't understand this condition/effect: set block at block 4 north player facing to water (script.sk, line 80: set block at block 4 north player facing to water')

Line 81: Can't understand this condition/effect: set block at block 5 north player facing to water (script.sk, line 81: set block at block 5 north player facing to water')

Line 83: Can't understand this condition/effect: set block at block 1 north player facing to air (script.sk, line 83: set block at block 1 north player facing to air')

Line 84: Can't understand this condition/effect: set block at block 2 north player facing to air (script.sk, line 84: set block at block 2 north player facing to air')

Line 85: Can't understand this condition/effect: set block at block 3 north player facing to air (script.sk, line 85: set block at block 3 north player facing to air')

Line 86: Can't understand this condition/effect: set block at block 4 north player facing to air (script.sk, line 86: set block at block 4 north player facing to air')

Line 87: Can't understand this condition/effect: set block at block 5 north player facing to air (script.sk, line 87: set block at block 5 north player facing to air')

Can anyone help me? Thanks so much

 

[TPGamesNL]

Use

set block 2 north of player to water

And what do you mean with

if no block in radius 5 in front of the player

 

[Nicore]

I want to check is there any block in front of a player (5 blocks)

i.e. I am now standing on 1,1,1 and I want to check is there any block in 2-6,1,1

 

[TPGamesNL]

Than use the first code block i sent