Facebook might have silently dropped permissions (read_insights and manage_pages) to the token provided in the Facebook Insights Extractor (ex-facebook). Your project might be missing insights data. Here are two simple steps to verify and fix this issue.
Verify your token's permissions
Paste the token(s) you have stored in the configuration into the debugger tool https://developers.facebook.com/tools/debug/ and look for the permissions in the results. If both read_insights and manage_pages are present in the Scopes section, your token is valid.
If not, please create a new the token.
Create a new token
https://syrup.keboola.com/ex-facebook/token and authorize our extractor with access to your account. You'll get a new token that you can paste back to your configuration.
If you have any gaps in your insights data, you can increase the overlap periods to automatically backfill the missing data or specify the period manually. See documentation for more details, if you're stuck, get in touch with us here in the comments section or at firstname.lastname@example.org.