title: The passed model is not callable and cannot be analyzed directly with the given masker! Model: None
body: <p>When i am using RandomForestRegressor or XGBoost, there is no problem like this. Since i am using Relevance Vector Regression i got this error.</p>
  <pre><code>from sklearn_rvm import EMRVR
  model_rvr=EMRVR(kernel=&quot;linear&quot;).fit(X, y)
  explainer = shap.Explainer(model_rvr)
  </code></pre>
  <blockquote>
  <p>Exception: The passed model is not callable and cannot be analyzed
  directly with the given masker! Model: None</p>
  </blockquote>
  <p>Also same problem as <a href="https://stackoverflow.com/questions/71117308/exception-the-passed-model-is-not-callable-and-cannot-be-analyzed-directly-with">Exception: The passed model is not callable and cannot be analyzed directly with the given masker</a></p>
  <p>For Relevance Vector Regression =&gt; <a href="https://sklearn-rvm.readthedocs.io/en/latest/index.html" rel="nofollow noreferrer">https://sklearn-rvm.readthedocs.io/en/latest/index.html</a></p>
  <p>Any idea ?</p>