No CallAdvisors available to execute: Spring AI

I am working on a Spring AI project, where my requirement is to configure a ChatClient and ChatModel dynamic configurations like max-tokens, advisor, etc.

For the purpose, I created a custom chat client-

@Bean("docSummaryChatClient") public ChatClient docSummaryChatClient( ChatClient.Builder builder, @Value("${doc-summary.model}") String modelName, @Value("${doc-summary.temperature}") Double temperature) { // Build specific options for this client OpenAiChatOptions docSummaryOptions = OpenAiChatOptions.builder() .model(modelName) .temperature(temperature) .build(); return builder .defaultOptions(docSummaryOptions) .build(); }

I have created a service layer to call the llm with the dynamic logging advisor and max-tokens-

@Component @Slf4j public class SummaryLlmServiceImpl implements SummaryLlmService { private final ChatClient docSummaryChatClient; private final PromptMetadataLoggingAdvisor promptMetadataLoggingAdvisor; public SummaryLlmServiceImpl( @Qualifier("docSummaryChatClient") ChatClient docSummaryChatClient, PromptMetadataLoggingAdvisor promptMetadataLoggingAdvisor) { this.docSummaryChatClient = docSummaryChatClient; this.promptMetadataLoggingAdvisor = promptMetadataLoggingAdvisor; } @Override public SummaryLlmResponse generate(String prompt, Integer maxTokens) { log.debug("Generating response for prompt: {} \n maxTokens: {}", prompt, maxTokens); var spec = docSummaryChatClient .prompt(prompt) .advisors(promptMetadataLoggingAdvisor) .options(OpenAiChatOptions.builder() .maxTokens(maxTokens) .build()); ChatClient.CallResponseSpec response = spec.call(); ChatResponse chatResponse = response.chatResponse(); Usage usage = chatResponse != null && chatResponse.getMetadata() != null ? chatResponse.getMetadata().getUsage() : null; var promptTokens = usage != null ? usage.getPromptTokens() : null; var completionTokens = usage != null ? usage.getCompletionTokens() : null; var totalTokens = usage != null ? usage.getTotalTokens() : null; return new SummaryLlmResponse( response.content(), promptTokens, completionTokens, totalTokens); } }

When I make the call, I get an error-

java.lang.IllegalStateException: No CallAdvisors available to execute at org.springframework.ai.chat.client.advisor.DefaultAroundAdvisorChain.nextCall(DefaultAroundAdvisorChain.java:97) ~[spring-ai-client-chat-1.0.0.jar:1.0.0] at org.springframework.ai.chat.client.DefaultChatClient$DefaultCallResponseSpec.lambda$doGetObservableChatClientResponse$1(DefaultChatClient.java:469) ~[spring-ai-client-chat-1.0.0.jar:1.0.0] at io.micrometer.observation.Observation.observe(Observation.java:564)

I tried finding the reason for this, but am not able to find out the cause for this. I event tried setting the logging advisor at the bean creation time,but it also gives the same error.