--- a/docs/_examples/plot_custom_source.py	2023-04-27 23:07:04.000000000 +0800
+++ b/docs/_examples/plot_custom_source.py	2023-04-29 18:24:35.212710056 +0800
@@ -65,11 +65,18 @@
 # sncosmo to download the Nugent Ia and 2p templates. Don't rely on this
 # the `DATADIR` object, or these paths in your code though, as these are
 # subject to change between version of sncosmo!
+# Use local data if download failed:
 from sncosmo.builtins import DATADIR
-phase1, wave1, flux1 = sncosmo.read_griddata_ascii(
-    DATADIR.abspath('models/nugent/sn1a_flux.v1.2.dat'))
-phase2, wave2, flux2 = sncosmo.read_griddata_ascii(
-    DATADIR.abspath('models/nugent/sn2p_flux.v1.2.dat'))
+try:
+    phase1, wave1, flux1 = sncosmo.read_griddata_ascii(
+        DATADIR.abspath('models/nugent/sn1a_flux.v1.2.dat'))
+except Exception:
+    phase1, wave1, flux1 = sncosmo.read_griddata_ascii('sn1a_flux.v1.2.dat')
+try:
+    phase2, wave2, flux2 = sncosmo.read_griddata_ascii(
+        DATADIR.abspath('models/nugent/sn2p_flux.v1.2.dat'))
+except Exception:
+    phase2, wave2, flux2 = sncosmo.read_griddata_ascii('sn2p_flux.v1.2.dat')
 
 # In our __init__ method we defined above, the two fluxes need to be on
 # the same grid, so interpolate the second onto the first: