Can't seem to fetch the selected user on UserSelectMenu?

[BuddyWinte]

case "member_report":
		min := 1
		max := 1
		menu := &discordgo.InteractionResponse{
			Type: discordgo.InteractionResponseChannelMessageWithSource,
			Data: &discordgo.InteractionResponseData{
				Content: "Select a member to report:",
				Flags:   discordgo.MessageFlagsEphemeral,
				Components: []discordgo.MessageComponent{
					discordgo.ActionsRow{
						Components: []discordgo.MessageComponent{
							discordgo.SelectMenu{
								CustomID:    "report_user_select",
								MenuType:    discordgo.UserSelectMenu,
								Placeholder: "Select a member...",
								MinValues:   &min,
								MaxValues:   max,
							},
						},
					},
				},
			},
		}
		if err := s.InteractionRespond(i.Interaction, menu); err != nil {
			fmt.Println("error responding", err)
		}

	case "report_user_select":
		selectedUserID := data.Values[0]

		user, err := s.User(selectedUserID)
		if err != nil {
			fmt.Println("failed to fetch", err)
			return
		}
		fmt.Printf("Fetched user: %+v\n", user)
		response := &discordgo.InteractionResponse{
			Type: discordgo.InteractionResponseChannelMessageWithSource,
			Data: &discordgo.InteractionResponseData{
				Content: fmt.Sprintf("You selected: <@%s>", user.ID),
				Flags:   discordgo.MessageFlagsEphemeral,
			},
		}
		if err := s.InteractionRespond(i.Interaction, response); err != nil {
			fmt.Println("error responding:", err)
		}
	}

Hey! I was trying to make this return the picked user, but it seems to just not respond at all, no error, it gives This interaction failed. I'm wondering if it's a lack of my coding knowledge or what.

It correctly shows the UserSelect, but once I select the error happens.