Im getting someting went wrong when i hit submit on my modal on discord? Anyone knows why?

I tried to add some error handeling but i get nothing in my terminal!
The code is inside a cog and is pasted below:
The button, and form is showing before and when i fill out and hit submit it shows the error

import discord
from discord.ext import commands
from discord import app_commands
from discord.ui import TextInput, Button, View, Modal


class StaffApplicationModal(Modal):
    def __init__(self):
        super().__init__(title="Staff Application Form")
        self.add_item(TextInput(label="Your Name", placeholder="Enter your full name"))
        self.add_item(TextInput(label="Duration in Server", placeholder="How long have you been in the server?"))
        self.add_item(TextInput(label="Reason for Applying", placeholder="Why do you want to be staff?"))
        self.add_item(TextInput(label="Previous Experience", placeholder="Describe any relevant previous experience"))

    async def callback(self, interaction: discord.Interaction):
        try:
            responses = [
                f"**Name:** {self.children[0].value}",
                f"**Duration in Server:** {self.children[1].value}",
                f"**Reason for Applying:** {self.children[2].value}",
                f"**Previous Experience:** {self.children[3].value}"
            ]
            application_review = "**New Staff Application:**nn" + "n".join(responses)
            application_channel_id = 1252323547091566712
            application_channel = interaction.client.get_channel(application_channel_id)
            if application_channel:
                try:
                    await interaction.response.send_message(application_review)
                except Exception as e:
                    print(f"Failed to send message: {str(e)}")
                    await interaction.response.send_message("Failed to send application review to the channel.", ephemeral=True)
            else:
                print("Failed to find application channel.")  # This will confirm if there's an issue with the channel ID
                await interaction.response.send_message("Application channel not found or bot lacks permissions.", ephemeral=True)
        except Exception as e:
            print(f"An error occurred: {str(e)}")  # Logging the exception
            await interaction.response.send_message(f"An error occurred: {str(e)}", ephemeral=True)


class ApplyButton(Button):
    def __init__(self):
        super().__init__(label="Apply for Staff", style=discord.ButtonStyle.green, custom_id="apply_staff")

    async def callback(self, interaction: discord.Interaction):
        modal = StaffApplicationModal()
        await interaction.response.send_modal(modal)

class StaffApplication(commands.Cog):
    def __init__(self, bot):
        self.bot = bot

    @app_commands.command(name='post_application_button', description="Post the application button in the channel.")
    @app_commands.checks.has_permissions(administrator=True)
    async def post_application_button(self, interaction: discord.Interaction):
        """Posts a button to start the application process."""
        view = View()
        view.add_item(ApplyButton())
        await interaction.response.send_message("Click the button below to apply for staff!", view=view, ephemeral=True)

    @app_commands.command(name='test_modal', description="Test the modal functionality.")
    async def test_modal(self, interaction: discord.Interaction):  # Added 'self' here
        modal = StaffApplicationModal()
        await interaction.response.send_modal(modal)

async def setup(bot):
    staff_app = StaffApplication(bot)
    await bot.add_cog(staff_app)
    bot.tree.add_command(staff_app.post_application_button, guild=discord.Object(id=959220051427340379))
    bot.tree.add_command(staff_app.test_modal, guild=discord.Object(id=959220051427340379))