From 6c89fd8b5f8af61676129d0d9452e67e3ba5b327 Mon Sep 17 00:00:00 2001
From: Bane Sullivan <banesullivan@gmail.com>
Date: Thu, 3 Oct 2024 19:45:46 -0700
Subject: [PATCH] Fix truthy issue

---
 localtileserver/tiler/handler.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/localtileserver/tiler/handler.py b/localtileserver/tiler/handler.py
index 450dddd..1e0af98 100644
--- a/localtileserver/tiler/handler.py
+++ b/localtileserver/tiler/handler.py
@@ -159,7 +159,7 @@ def _render_image(
         colormap = {k: tuple(v) for k, v in enumerate(c(range(256), 1, 1))}
     elif isinstance(colormap, Colormap):
         colormap = {k: tuple(v) for k, v in enumerate(colormap(range(256), 1, 1))}
-    else:
+    elif colormap:
         c = json.loads(colormap)
         if isinstance(c, list):
             c = LinearSegmentedColormap.from_list("", c, N=256)