update sendgrid code

webapp/utils.py

@@ -59,20 +59,28 @@ def send_email(to, subject, body, html=False):
         logging.debug(f"body: {body}")
         return
 
-    from_email = Email(DEFAULT_EMAIL_FROM_ADDR)
-    to_email = To(to)
-    sub = Subject(subject)
+    from_email = DEFAULT_EMAIL_FROM_ADDR
+    to_email = to
+    sub = subject
 
+    html_content = None
+    plain_text_content = None
     if (html):
-        content = HtmlContent(body)
+        html_content = HtmlContent(body)
     else:
-        content = PlainTextContent(body)
+        plain_text_content = PlainTextContent(body)
 
-    mail = Mail(from_email, to_email, sub, content)
+    mail = Mail(
+        from_email=from_email,
+        to_emails=to_email,
+        subject=sub,
+        html_content=html_content,
+        plain_text_content=plain_text_content
+    )
 
     try:
         sg = sendgrid.SendGridAPIClient(EMAIL_API_KEY)
-        response = sg.client.mail.send.post(request_body=mail.get())
+        response = sg.send(mail)
 
         if response.status_code != 202:
             raise Exception(f'Failed to send email: {response.body}')