# Email template not updating

If your email templates are not updated, check [Auth Logs](https://supabase.com/dashboard/project/_/logs/auth-logs) for any errors when the email is sent. When there are errors, we will use a fallback template with valid syntax so it will not show any of your customizations.

Typical errors relate to invalid syntax involving variables. Refer to [the Email Templates docs](https://supabase.com/docs/guides/auth/auth-email-templates#terminology) for the supported variables and syntax.

**Example error message**

```
"event": "templatemailer_template_body_parse_error",
"msg": "templatemailer: template type \"recovery\": template: https://api.supabase.com/platform/auth/PROJECT_ID/templates/recovery:2: function \"default\" not defined",
```

The error shows an issue with `default` which is used in the invalid syntax below.

```
{{ .Data.display_name | default: "test" }}
```

The final correct syntax after removing invalid syntax.

```
{{ .Data.display_name }}
```