Aggiornato Composer

vendor/symfony/mime/Part/DataPart.php

@@ -33,7 +33,7 @@ class DataPart extends TextPart
     /**
      * @param resource|string $body
      */
-    public function __construct($body, string $filename = null, string $contentType = null, string $encoding = null)
+    public function __construct($body, ?string $filename = null, ?string $contentType = null, ?string $encoding = null)
     {
         unset($this->_parent);
 
@@ -51,7 +51,7 @@ class DataPart extends TextPart
         $this->setDisposition('attachment');
     }
 
-    public static function fromPath(string $path, string $name = null, string $contentType = null): self
+    public static function fromPath(string $path, ?string $name = null, ?string $contentType = null): self
     {
         if (null === $contentType) {
             $ext = strtolower(substr($path, strrpos($path, '.') + 1));
@@ -61,13 +61,20 @@ class DataPart extends TextPart
             $contentType = self::$mimeTypes->getMimeTypes($ext)[0] ?? 'application/octet-stream';
         }
 
-        if (false === is_readable($path)) {
+        if ((is_file($path) && !is_readable($path)) || is_dir($path)) {
             throw new InvalidArgumentException(sprintf('Path "%s" is not readable.', $path));
         }
 
         if (false === $handle = @fopen($path, 'r', false)) {
             throw new InvalidArgumentException(sprintf('Unable to open path "%s".', $path));
         }
+
+        if (!is_file($path)) {
+            $cache = fopen('php://temp', 'r+');
+            stream_copy_to_stream($handle, $cache);
+            $handle = $cache;
+        }
+
         $p = new self($handle, $name ?: basename($path), $contentType);
         $p->handle = $handle;
 

vendor/symfony/mime/Part/MessagePart.php

@@ -59,4 +59,17 @@ class MessagePart extends DataPart
     {
         return $this->message->toIterable();
     }
+
+    /**
+     * @return array
+     */
+    public function __sleep()
+    {
+        return ['message'];
+    }
+
+    public function __wakeup()
+    {
+        $this->__construct($this->message);
+    }
 }

vendor/symfony/mime/Part/Multipart/FormDataPart.php

@@ -58,7 +58,7 @@ final class FormDataPart extends AbstractMultipartPart
         $values = [];
 
         $prepare = function ($item, $key, $root = null) use (&$values, &$prepare) {
-            if (\is_int($key) && \is_array($item)) {
+            if (null === $root && \is_int($key) && \is_array($item)) {
                 if (1 !== \count($item)) {
                     throw new InvalidArgumentException(sprintf('Form field values with integer keys can only have one array element, the key being the field name and the value being the field value, %d provided.', \count($item)));
                 }

vendor/symfony/mime/Part/TextPart.php

@@ -42,7 +42,7 @@ class TextPart extends AbstractPart
     /**
      * @param resource|string $body
      */
-    public function __construct($body, ?string $charset = 'utf-8', string $subtype = 'plain', string $encoding = null)
+    public function __construct($body, ?string $charset = 'utf-8', string $subtype = 'plain', ?string $encoding = null)
     {
         unset($this->_headers);
 
@@ -197,6 +197,7 @@ class TextPart extends AbstractPart
         // convert resources to strings for serialization
         if (null !== $this->seekable) {
             $this->body = $this->getBody();
+            $this->seekable = null;
         }
 
         $this->_headers = $this->getHeaders();