diff -ru src/Extension/CoreExtension.php src/Extension/CoreExtension.php
--- src/Extension/CoreExtension.php	2024-02-10 09:36:15.915878535 +0000
+++ src/Extension/CoreExtension.php	2024-02-10 09:36:22.155090273 +0000
@@ -330,7 +330,7 @@
         }
 
         if (!\count($values)) {
-            throw new RuntimeError('The "cycle" function does not work on empty arrays');
+            throw new RuntimeError('The "cycle" function does not work on empty arrays.');
         }
 
         return $values[$position % \count($values)];
@@ -1067,7 +1067,7 @@
     public static function matches(string $regexp, ?string $str)
     {
         set_error_handler(function ($t, $m) use ($regexp) {
-            throw new RuntimeError(sprintf('Regexp "%s" passed to "matches" is not valid', $regexp).substr($m, 12));
+            throw new RuntimeError(sprintf('Regexp "%s" passed to "matches" is not valid.', $regexp).substr($m, 12));
         });
         try {
             return preg_match($regexp, $str ?? '');
@@ -1855,7 +1855,7 @@
     public static function checkArrowInSandbox(Environment $env, $arrow, $thing, $type)
     {
         if (!$arrow instanceof \Closure && $env->hasExtension('\Twig\Extension\SandboxExtension') && $env->getExtension('\Twig\Extension\SandboxExtension')->isSandboxed()) {
-            throw new RuntimeError(sprintf('The callable passed to the "%s" %s must be a Closure in sandbox mode.', $thing, $type));
+            throw new RuntimeError(sprintf('The callable passed to the "%s" "%s" must be a Closure in sandbox mode.', $thing, $type));
         }
     }
 }