Hi$!$ I need help finding the error in my MIPS code. The error is shown in image four highlighted in yellow. I think it might have to do with the concatnation code. Here is my code with explanation:

# Start step $1$

lw $t$0,0($$s$0)$ #Store A$[0]$ in $t$0$

lw $t$1,4($$s$0)$ #Store A$[1]$ in $t$1$

# Start step $2$

mult $t$0,$ $t$1$ #Multiply A$[0]*$ A$[1]$

mflo $t$2$

mfhi $t$3$

sw $t$2,8($$s$0)$ #Store in A$[2]$

sw $t$3,12($$s$0)$ #Store in A$[3]$

# Start step $3$

addi $t$4,$ $zero, $230$

div $t$2,$ $t$4$ #Divide A$[2]$ by $230$

mflo $t$5$ #Store the quotient in $t$5$

mfhi $s$1$ #Store remainder as variable a $($this is step $4)$

sw $t$5,16($$s$0)$ #Store quotient in A$[4]$

# Start step $5$

srl $s$2,$ $s$1,16$ #Shift $s$1($a$)16$ bits to the right and store in $s$2($b$)$

# Start step $6$

andi $s$3,$ $s$1,8$ #Perform bitwise AND of $s$1($a$)$ and $8,$ store result in $s$3($c$)$

# Start step $7$

sll $s$4,$ $s$1,2$ #Shift $s$1($a$)2$ bits to the left and store results in $s$4($d$)$

# Start step $8$

or $s$2,$ $s$2,$ $s$3$ #Combine b$($$s$2)$ and c$($$s$3)$

or $s$2,$ $s$2,$ $s$4$ #Combine with d$($$s$4)$

sw $s$2,20($$s$0)$ #Store result in A$[5]$

# Write comments explaining your code and all the registers and memory used

# Step $1$: Load A$[0]$ into $t$0$ and A$[1]$ into $t$1$

# Step $2$: Calculate $\{$A$[3],$ A$[2]\}=$ A$[1]*$ A$[0]$

# Step $3$: Calculate A$[4]=$ A$[2]/230$ by storing constant $230$ $t$4$

# Step $4$: Caluclate a $=$ A$[2]\%230$ where a will be $s$1$

# Step $5$: Calculate b $=$ a $>>16$ which is a $\text{'}>>\text{'}=$ right shift where b is $s$2$

# Step $6$: Calculate c $=$ a & $8$ where $\text{'}$&$\text{'}=$ bit$-$wise and and c is $s$3$

# Step $7$: Calculate d $=$ a where left shift and d is $s$4$

# Step $8$: Calculate A$[5]=\{$b$,$ c$,$ d$\}$ where $\{\}=$ concatenation and b is $s$2,$ c is $s$3,$ and d is $s$4$