Check RTD environment

Author: ItayZiv

sphinxext/opengraph/__init__.py

@@ -67,10 +67,15 @@ def get_tags(
     # type tag
     tags["og:type"] = config["ogp_type"]
 
+    from sphinx.util import logging
+
+    log = logging.getLogger(__name__)
+
     if os.getenv("READTHEDOCS") and config["ogp_site_url"] is None:
         # readthedocs uses html_baseurl for sphinx > 1.8
         parse_result = urlparse(config["html_baseurl"])
-
+        log.info(config["html_baseurl"])
+        log.info(config["ogp_site_url"])
         if config["html_baseurl"] is None:
             raise EnvironmentError("ReadTheDocs did not provide a valid canonical URL!")
 
@@ -86,6 +91,8 @@ def get_tags(
             )
         )
 
+    log.info(config["ogp_site_url"])
+
     # url tag
     # Get the URL of the specific page
     if context["builder"] == "dirhtml":