risc-v assembly code, c to assembly(bubble sort). when i use risc-v simulator-web, i get to this error. i i didn't solve it

Question

i try to translate c to assembly code - (risc-v) but i met this screen and error when i use web risc-v simulator. i use it

https://www.cs.cornell.edu/courses/cs3410/2019sp/riscv/interpreter/ https://riscv.vercel.app/#

but simulators give error that don't read and unknown code to me.

so i think that i mistake for my code or i misused simulator

are you teaching me about my mistake?

this is my assembly code

.data
v:
.word 6, 3, 2, 4, 1, 5 # Array data

.text
.globl main
la a0, v

swap:
    slli t1, a1, 2
    add t1, a0, t1
    lw t0, 0(t1)
    lw t2, 4(t1)
    sw t2, 0(t1)
    sw t0, 4(t1)
    ret

sort:
    addi sp, sp, -20
    sw ra, 16(sp)
    sw s6, 12(sp)
    sw s5, 8(sp)
    sw s4, 4(sp)
    sw s3, 0(sp)

    mv s5, a0
    mv s6, a1
    li s3, 0

outer:
    bge s3, s6, outerExit
    addi s4, s3, -1

inner:
    blt s4, zero, innerExit
    slli t0, s4, 2
    add t0, s5, t0
    lw t1, 0(t0)
    lw t2, 8(t0)
    ble t1, t2, innerExit

    mv a0, s5
    mv a1, s4
    jal ra, swap

    addi s4, s4, -1
    j inner

innerExit:
    addi s3, s3, 1
    j outer

outerExit:
    lw s3, 0(sp)
    lw s4, 4(sp)
    lw s5, 8(sp)
    lw s6, 12(sp)
    lw ra, 16(sp)
    addi sp, sp, 20
    ret



main:
    
    # Calculate the number of elements in the array
    li a1, 6  # 6 elements in the array

    # Call the sort function
    jal ra, sort

    # Exit the program
    li a7, 10  # Exit system call
    ecall

when i write this code i used my lecture sources and chat gpt

correct my faults - if i use misknoledge recommend risc-v web simulator recommend risc-v tutorial site or pdf or etc