When i go to Build then compile i get these errors

Login.dm:410:warning: empty 'else' clause
Login.dm:413: Inconsistent indentation.
Login.dm:414: Inconsistent indentation.
Login.dm:415: Inconsistent indentation.
Login.dm:416: Inconsistent indentation.
Login.dm:415:warning: empty 'else' clause

Line 410 :

else//If no reason

line 413 :


del(M)//Deletes the booted player

Line 414 :

world << "[src.name] has booted [M] because: [reason]"//Tells the whole world what just happened

Line 415:
else//Besides that too...

Line 416 :
usr << "You can't boot

Line 415 again :

npcs. Use delete!"//Use delete instead of trying to use boot on objects

Can you people please help me out please