Merge branch 'master' into feature/everyone_command

Author: EmersonDoAmaral

src/commands/commands.js

@@ -10,12 +10,11 @@ Lista todos os comandos disponíveis.
 
   availableCommands: `
 Os seguintes comandos estão disponiveis:
-- !bot
+- !about
 - !coin
 - !commands
 - !cron
 - !everyone
-- !doc
 - !links
 - !lyric
 - !report

src/utils/chattools.js

@@ -29,6 +29,10 @@ async function getMembersList(chat) {
  * @returns {string[]} - Serialized phone numbers of all administrators.
  */
 async function getAdmsList(chat) {
+  if (!chat.isGroup) {
+    throw new Error(`This chat isn't a group.`);
+  }
+
   const members = await chat.participants;
   const admsIdList = members.filter((id) => id.isAdmin);
   const admsSerialList = getSerialList(admsIdList);