fix: Make sure arguments are JSON-encodable

stan-dev · Apr 2, 2021 · e1e3146 · e1e3146
1 parent e2eb998
commit e1e3146
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/stan/model.py b/stan/model.py
@@ -130,6 +130,7 @@ def _create_fit(self, payload: dict) -> stan.fit.Fit:
         assert "random_seed" not in payload, "`random_seed` is set in `build`."
         assert "function" in payload
 
+        payload = json.loads(DataJSONEncoder().encode(payload))
         num_chains = payload.pop("num_chains", 4)
 
         init = payload.pop("init", [dict() for _ in range(num_chains)])