(20241203) Solutions didn'r work. Reverting.

api/blueprints/mail/oauth_callback.py

@@ -117,7 +117,7 @@ async def handle_gmail_callback() -> render_template:
     tokens_saved = False
 
     # In case the user cancelled halfway through (on Google's screen):
-    if g.inbound_data.get("error") == "access_denied": return render_template(
+    if g.inbound_data.get("error") == "access_denied": return await render_template(
         "/mail/oauth/oauth_cancelled_v2.html",
         mail_client = g.mail_client.title()
     )
@@ -147,7 +147,7 @@ async def handle_gmail_callback() -> render_template:
         if (
                 (not placeholder_token) or
                 placeholder_token["clientUserId"]["email"] != str(tokens.email)
-        ): return render_template(
+        ): return await render_template(
             "/mail/oauth/oauth_failure_v2.html",
             mail_client = g.mail_client.title(),
             failure_hint = f"We were expecting authorization from '{placeholder_token['clientUserId']['email']}' but got authorization from '{tokens.email}' instead."
@@ -199,13 +199,13 @@ async def handle_gmail_callback() -> render_template:
         )
 
     # Return an HTML response for success:
-    if tokens_saved: await render_template(
+    if tokens_saved: return await render_template(
         "/mail/oauth/oauth_success_v2.html",
         mail_client = g.mail_client.title()
     )
 
     # Return an HTML response for failure:
-    else: return render_template(
+    else: return await render_template(
         "/mail/oauth/oauth_failure_v2.html",
         mail_client = g.mail_client.title(),
         failure_hint = f"Unknown error. Please use log-id '{g.log_id}' to check with the support team."
@@ -262,9 +262,7 @@ async def mail_callback(
     # ┣┫┏┓┏┓┏┫┃┏┓  ┃ ┏┓┃┃┣┓┏┓┏┃┏┏
     # ┛┗┗┻┛┗┗┻┗┗   ┗┛┗┻┗┗┗┛┗┻┗┛┗┛
 
-    if mail_client == "gmail":
-        template = await handle_gmail_callback()
-        return await template
+    if mail_client == "gmail": return await handle_gmail_callback()
 
     # ┓┏     ┓┓    ┳      ┓• ┓  ┏┓┓•
     # ┣┫┏┓┏┓┏┫┃┏┓  ┃┏┓┓┏┏┓┃┓┏┫  ┃ ┃┓┏┓┏┓╋