"env -u CAL_USR"

README.rst

@@ -82,7 +82,8 @@ run server
 .. code-block:: shell
 
     > cd /path/to/cal
-    > ./server
+    > ./server 
+    > # env -u CAL_USR ./server # if env variable CAL_USR exist but CouchDB (2.3.1) has no such user
 
 install daemon and start 
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