gpxpy version assertion

search.py

@@ -11,8 +11,10 @@ import cgi
 import gpxpy
 import requests
 import os
+from packaging import version
 import sys
 assert sys.version_info >= (3, 6), "At least Python 3.8 required due to fStrings. Replace all f\"…\" and comment this line to enable running in lower versions (but really, you should just update your Python version…)."
+assert version.parse(gpxpy.__version) >= version.parse("1.4.0"), "Update gpxpy to at least v1.4.0"
 
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