Added handling for when prompt_eval_count is not in the response (it …

…is often not) so it does not error out (#2)

Added handling for when prompt_eval_count is not in the response (it is often not) so it does not error out

src/Client/Response/ChatResponse.php

@@ -14,11 +14,11 @@ public static function fromArray(array $data): self
             createdAt: new DateTimeImmutable($data['created_at']),
             message: Message::fromArray($data['message']),
             done: $data['done'],
-            totalDuration: $data['total_duration'],
-            loadDuration: $data['load_duration'],
-            promptEvalCount: $data['prompt_eval_count'],
-            promptEvalDuration: $data['prompt_eval_duration'],
-            evalCount: $data['eval_count'],
+            totalDuration: $data['total_duration'] ?? null,
+            loadDuration: $data['load_duration'] ?? null,
+            promptEvalCount: $data['prompt_eval_count'] ?? null,
+            promptEvalDuration: $data['prompt_eval_duration'] ?? null,
+            evalCount: $data['eval_count'] ?? null,
         );
     }
 
@@ -27,11 +27,11 @@ public function __construct(
         public readonly DateTimeImmutable $createdAt,
         public readonly Message $message,
         public readonly bool $done,
-        public readonly int $totalDuration,
-        public readonly int $loadDuration,
-        public readonly int $promptEvalCount,
-        public readonly int $promptEvalDuration,
-        public readonly int $evalCount,
+        public readonly ?int $totalDuration,
+        public readonly ?int $loadDuration,
+        public readonly ?int $promptEvalCount,
+        public readonly ?int $promptEvalDuration,
+        public readonly ?int $evalCount,
     ) {
     }
 }