updated composer

vendor/symfony/console/Helper/ProgressIndicator.php

@@ -142,7 +142,7 @@ class ProgressIndicator
             self::$formats = self::initFormats();
         }
 
-        return isset(self::$formats[$name]) ? self::$formats[$name] : null;
+        return self::$formats[$name] ?? null;
     }
 
     /**
@@ -170,7 +170,7 @@ class ProgressIndicator
             self::$formatters = self::initPlaceholderFormatters();
         }
 
-        return isset(self::$formatters[$name]) ? self::$formatters[$name] : null;
+        return self::$formatters[$name] ?? null;
     }
 
     private function display()
@@ -185,7 +185,7 @@ class ProgressIndicator
             }
 
             return $matches[0];
-        }, $this->format));
+        }, $this->format ?? ''));
     }
 
     private function determineBestFormat(): string