fix(slash_command): fix for incorrect behavior of slash commands following an error

src/commands/edit/message_ops.rs

@@ -1,10 +1,10 @@
 use crate::config::Config;
-use crate::db::messages::{get_thread_message_by_inbox_message_id, MessageIds};
+use crate::db::messages::{MessageIds, get_thread_message_by_inbox_message_id};
 use crate::db::operations::{
     get_message_ids_by_number, get_thread_by_channel_id, get_user_id_from_channel_id,
 };
-use crate::errors::common::{incorrect_message_id, not_found, permission_denied, thread_not_found};
 use crate::errors::MessageError::{DmAccessFailed, EditFailed};
+use crate::errors::common::{incorrect_message_id, not_found, permission_denied, thread_not_found};
 use crate::errors::{ModmailError, ModmailResult};
 use crate::utils::conversion::hex_string_to_int::hex_string_to_int;
 use crate::utils::message::message_builder::MessageBuilder;

src/commands/move_thread/slash_command/move_thread.rs

@@ -11,7 +11,7 @@ use crate::utils::command::defer_response::defer_response;
 use crate::utils::message::message_builder::MessageBuilder;
 use serenity::all::{
     CommandInteraction, CommandOptionType, Context, CreateCommand, CreateCommandOption,
-    CreateInteractionResponse, ResolvedOption,
+    ResolvedOption,
 };
 use std::collections::HashMap;
 
@@ -109,12 +109,10 @@ pub async fn run(
                 )
                 .await
                 .to_channel(command.channel_id)
-                .build_interaction_message()
+                .build_interaction_message_followup()
                 .await;
 
-            command
-                .create_response(&ctx.http, CreateInteractionResponse::Message(response))
-                .await?;
+            command.create_followup(&ctx.http, response).await?;
 
             Ok(())
         }

src/errors/handler.rs

@@ -3,10 +3,9 @@ use crate::errors::dictionary::DictionaryManager;
 use crate::errors::types::{ModmailError, ModmailResult};
 use crate::i18n::languages::{Language, LanguageDetector, LanguagePreferences};
 use serenity::all::{
-    ChannelId, Colour, CommandInteraction, Context, CreateEmbed, CreateInteractionResponseMessage,
+    ChannelId, Colour, CommandInteraction, Context, CreateEmbed, CreateInteractionResponseFollowup,
     CreateMessage, Message, UserId,
 };
-use serenity::builder::CreateInteractionResponse;
 use std::collections::HashMap;
 use std::sync::Arc;
 use tokio::sync::RwLock;
@@ -154,7 +153,7 @@ impl ErrorHandler {
         ctx: &Context,
         command: &CommandInteraction,
         error: &ModmailError,
-    ) -> Result<(), serenity::Error> {
+    ) -> Result<Message, serenity::Error> {
         let formatted_error = self
             .handle_error(
                 error,
@@ -166,11 +165,9 @@ impl ErrorHandler {
         let embed = self.create_error_embed(&formatted_error).await;
 
         command
-            .create_response(
+            .create_followup(
                 &ctx.http,
-                CreateInteractionResponse::Message(
-                    CreateInteractionResponseMessage::new().embed(embed),
-                ),
+                CreateInteractionResponseFollowup::new().embed(embed),
             )
             .await
     }