hmpf, it's fine if there's no tile_dir

CHANGELOG.md

@@ -0,0 +1,17 @@
+# Changelog
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
+and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
+
+**Unreleased** is available in Github's `master` branch, but not on PyPI.
+
+## [3.0.1](https://pypi.org/project/pyvalhalla/3.0.0/) - 2021-03-08
+
+### Fixed
+
+- Actor wouldn't initialize if either tile_dir OR tile_extract wasn't present; we only need of one them
+
+## [3.0.0](https://pypi.org/project/pyvalhalla/3.0.0/) - 2021-03-08
+
+### First release

valhalla/actor.py

@@ -58,9 +58,9 @@ def __init__(self, config: Union[Path, str, dict]):
         tile_dir = config.get("mjolnir", {}).get("tile_dir")
 
         # raise if neither exists
-        if not tile_extract_fp or not tile_dir:
+        if not tile_extract_fp and not tile_dir:
             raise AttributeError(
-                "Valhalla config JSON is not valid: either mjolnir.tile_extract or mjolnir.tile_dir is missing."
+                "Valhalla config JSON is not valid: mjolnir.tile_extract and mjolnir.tile_dir are missing."
             )
         if not Path(config["mjolnir"]["tile_extract"]).is_file():
             if not Path(config["mjolnir"]["tile_dir"]).is_dir():