Your project must not contain invalid instantiations

More information: https://insight.symfony.com/what-we-analyse/php.invalid_instantiation

in src/Errbit/Utils/XmlBuilder.php, line 67 
  1.         $this->_xml->{$name}[$idx] = $value;
  3.         foreach ($attributes as $attr => $v) {
  4.             $this->_xml->{$name}[$idx][(string) $attr] = (string) $v;
  5.         }
  6.         $node = new self($this->_xml->$name);
    Parameter #1 $xml of class Errbit\Utils\XmlBuilder constructor expects SimpleXMLElement|null, mixed given.
    Time to fix: about 1 hour
    Read doc
                Open Issue
             Permalink Copy Prompt
    
                                    Last edited  by Max Małecki
                    
  7.         if ($getLastChild) {
  8.             $array = $this->_xml->xpath($name."[last()]");
  9.             if (is_array($array)) {
  10.                 $xml = array_shift($array);
  11.                 if ($xml instanceof \SimpleXMLElement) {

Your project should not use invalid offsets

More information: https://insight.symfony.com/what-we-analyse/php.invalid_offset

in src/Errbit/Utils/XmlBuilder.php, line 95 
  1.      *
  2.      * @return static the current builder
  3.      */
  4.     public function attribute(string $name, string $value): static
  5.     {
  6.         $this->_xml[$name] = $value;
    SimpleXMLElement does not accept string.
    Time to fix: about 9 minutes
    Read doc
                Open Issue
             Permalink Copy Prompt
    
                                    Last edited  by Max Małecki
                    
  8.         return $this;
  9.     }
  11.     /**