fix conversion create issue.

Author: maldechavda

app/Conversation.php

@@ -74,11 +74,10 @@ public function unreadMessage()
  */
  public static function firstConversion($participant)
  {
- return self::whereHas('users', function ($query) use ($participant) {
- $query->whereIn('id', [
- auth()->id(),
- $participant
- ]);
+ return self::whereHas('users', function ($query) {
+ $query->where('id', auth()->id());
+ })->whereHas('users', function ($query) use ($participant) {
+ $query->where('id', $participant);
  })->first();
  }