Fix PHP8 error: string offset access syntax with curly braces

Error was:
PHP Fatal error:  Array and string offset access syntax with curly braces is no longer supported

1 files changed, 1 insertions, 1 deletions

diff --git a/src/bdrem/Renderer.php b/src/bdrem/Renderer.php
index 7357af6..6612447 100644
--- a/src/bdrem/Renderer.php
+++ b/src/bdrem/Renderer.php
@@ -74,7 +74,7 @@ abstract class Renderer
      */
     protected function getLocalDate($dateStr)
     {
-        if ($dateStr{0} != '?') {
+        if ($dateStr[0] != '?') {
             return strftime('%x', strtotime($dateStr));
         }