api/insert: document the assertion failure

If a bad api url was provided it might show up there.
1 files changed, 1 insertions(+), 1 deletions(-)

M tshistory_client/api.py
M tshistory_client/api.py +1 -1
@@ 86,7 86,7 @@ class Client:
             }
         )
 
-        assert res.status_code in (200, 201, 405, 418)
+        assert res.status_code in (200, 201, 405, 418), f'{res.status_code} {res.text}'
         if res.status_code == 405:
             raise ValueError(res.json()['message'])