diff --git a/npe.txt b/npe.txt
deleted file mode 100644
index e396e9008..000000000
--- a/npe.txt
+++ /dev/null
@@ -1,65 +0,0 @@
-diff --git a/models/spring-ai-ollama/src/main/java/org/springframework/ai/ollama/OllamaChatModel.java b/models/spring-ai-ollama/src/main/java/org/springframework/ai/ollama/OllamaChatModel.java
-index c6d689e6..6168ea55 100644
---- a/models/spring-ai-ollama/src/main/java/org/springframework/ai/ollama/OllamaChatModel.java
-+++ b/models/spring-ai-ollama/src/main/java/org/springframework/ai/ollama/OllamaChatModel.java
-@@ -211,13 +211,18 @@ public class OllamaChatModel extends AbstractToolCallSupport implements ChatMode
- 
- 			Flux<ChatResponse> chatResponse = ollamaResponse.map(chunk -> {
- 				String content = (chunk.message() != null) ? chunk.message().content() : "";
--				List<AssistantMessage.ToolCall> toolCalls = chunk.message().toolCalls() == null ? List.of()
--						: chunk.message()
--							.toolCalls()
--							.stream()
--							.map(toolCall -> new AssistantMessage.ToolCall("", "function", toolCall.function().name(),
--									ModelOptionsUtils.toJsonString(toolCall.function().arguments())))
--							.toList();
-+
-+				List<AssistantMessage.ToolCall> toolCalls = List.of();
-+
-+				// Added null checks to prevent NPE when accessing tool calls
-+				if (chunk.message() != null && chunk.message().toolCalls() != null) {
-+					toolCalls = chunk.message()
-+						.toolCalls()
-+						.stream()
-+						.map(toolCall -> new AssistantMessage.ToolCall("", "function", toolCall.function().name(),
-+								ModelOptionsUtils.toJsonString(toolCall.function().arguments())))
-+						.toList();
-+				}
- 
- 				var assistantMessage = new AssistantMessage(content, Map.of(), toolCalls);
- 
-diff --git a/models/spring-ai-ollama/src/test/java/org/springframework/ai/ollama/OllamaChatModelMultimodalIT.java b/models/spring-ai-ollama/src/test/java/org/springframework/ai/ollama/OllamaChatModelMultimodalIT.java
-index f58552f8..4dffc7d2 100644
---- a/models/spring-ai-ollama/src/test/java/org/springframework/ai/ollama/OllamaChatModelMultimodalIT.java
-+++ b/models/spring-ai-ollama/src/test/java/org/springframework/ai/ollama/OllamaChatModelMultimodalIT.java
-@@ -40,6 +40,7 @@ import java.io.IOException;
- import java.util.List;
- 
- import static org.assertj.core.api.Assertions.assertThat;
-+import static org.junit.Assert.assertThrows;
- 
- @SpringBootTest
- @Testcontainers
-@@ -67,6 +68,18 @@ class OllamaChatModelMultimodalIT extends BaseOllamaIT {
- 	@Autowired
- 	private OllamaChatModel chatModel;
- 
-+	@Test
-+	void unsupportedMediaType() throws IOException {
-+
-+		var imageData = new ClassPathResource("/norway.webp");
-+
-+		var userMessage = new UserMessage("Explain what do you see on this picture?",
-+				List.of(new Media(MimeTypeUtils.IMAGE_PNG, imageData)));
-+
-+		assertThrows(RuntimeException.class, () -> chatModel.call(new Prompt(List.of(userMessage))));
-+
-+	}
-+
- 	@Test
- 	void multiModalityTest() throws IOException {
- 
-diff --git a/models/spring-ai-ollama/src/test/resources/norway.webp b/models/spring-ai-ollama/src/test/resources/norway.webp
-new file mode 100644
-index 00000000..0da983e2
-Binary files /dev/null and b/models/spring-ai-ollama/src/test/resources/norway.webp differ