When using the chunk function, some messages do not have an element with index 0 Webklex#552 Webklex#553

Co-authored-by: Dmitry Chizh <[email protected]>

Author: zeddmaster

src/Connection/Protocols/ImapProtocol.php

@@ -770,6 +770,7 @@ public function fetch(array|string $items, array|int $from, mixed $to = null, in
         if (is_array($from) && count($from) > 1) {
             $set = implode(',', $from);
         } elseif (is_array($from) && count($from) === 1) {
+            $from = array_values($from);
             $set = $from[0] . ':' . $from[0];
         } elseif ($to === null) {
             $set = $from . ':' . $from;