what is the error in this solution

# i..>$t0   sum...>$t1   n...>$t2


.data
prompt1:    .asciiz "Enter a number"
prompt2:    .asciiz "The sum of entered number is: "

.text

main:
li $v0, 4             #System call code for print String
la $a0, prompt1       #load address of prompt1
syscall               #Call OS to print prompt1


li $v0, 5             #System call code for read integer
syscall               #Call OS to read integer into $v0
move $t2, $v0         #move the number to read into $t2

addi $t0, $zero,1     #i=0+1
add $t1, $zero,$zero  #sum=0+0


loop:   slt $t3, $t2,$t0            #t4= if n(i)
        bnq $zero, $t3, goo       #if 0==t4 go to "goo"
	  
        add $t1, $t1, $t0           #sum=+1
        addi $t0, $t0, 1            # i+=1
	 
	j loop
	  		
goo:   beq $t2, $zero, exit     #if n==0 go to "go"
       li $v0, 4
       la $a0, prompt2
       syscall               # print out "Sum = "

       li $v0, 1
       move $a0, $t1
       syscall               # print out actual sum

	    
 exit:
       li $v0, 10
       syscall