Is there an existing issue for this?

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Current Behavior

[ERROR] Tests run: 19, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 0.121 s <<< FAILURE! - in org.apache.shenyu.plugin.ai.transformer.response.AiResponseTransformerPluginTest
[ERROR] org.apache.shenyu.plugin.ai.transformer.response.AiResponseTransformerPluginTest.testDoExecute Time elapsed: 0.082 s <<< ERROR!
java.lang.NullPointerException: Cannot invoke "org.springframework.web.server.ServerWebExchange$Builder.response(org.springframework.http.server.reactive.ServerHttpResponse)" because the return value of "org.springframework.web.server.ServerWebExchange.mutate()" is null
at org.apache.shenyu.plugin.ai.transformer.response.AiResponseTransformerPluginTest.testDoExecute(AiResponseTransformerPluginTest.java:104)

Expected Behavior

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Steps To Reproduce

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Environment

ShenYu version(s): master

Debug logs

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Anything else?

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