From 5ea6a3c433907fdf26496dae55a912898c67668d Mon Sep 17 00:00:00 2001
From: Rob Zinkov <rob@zinkov.com>
Date: Thu, 3 Nov 2022 18:57:57 +0100
Subject: [PATCH] Add None for fields not used by beanmachine converter

---
 arviz/data/io_beanmachine.py | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arviz/data/io_beanmachine.py b/arviz/data/io_beanmachine.py
index 5247b1e869..c5516ac1f3 100644
--- a/arviz/data/io_beanmachine.py
+++ b/arviz/data/io_beanmachine.py
@@ -24,15 +24,23 @@ def __init__(
 
         if "posterior" in self.sampler.namespaces:
             self.posterior = self.sampler.namespaces["posterior"].samples
+        else:
+            self.posterior = None
 
         if "posterior_predictive" in self.sampler.namespaces:
             self.posterior_predictive = self.sampler.namespaces["posterior_predictive"].samples
+        else:
+            self.posterior_predictive = None
 
         if self.sampler.log_likelihoods is not None:
             self.log_likelihoods = self.sampler.log_likelihoods
+        else:
+            self.log_likelihoods = None
 
         if self.sampler.observations is not None:
             self.observations = self.sampler.observations
+        else:
+            self.observations = None
 
     @requires("posterior")
     def posterior_to_xarray(self):