Oops… there was a problem during the request. Maybe the server had a temporary issue, or maybe you requested a report with too much data. Please try again. If this error occurs repeatedly please contact your Piwik administrator for assistance

After login > Landing page (Which is ALL WEBSITE DASHBOARD), is not showing any data but when we click on icons VISITS or WEBSITE it shows following error:

Oops… there was a problem during the request. Maybe the server had a temporary issue, or maybe you requested a report with too much data. Please try again. If this error occurs repeatedly please contact your Piwik administrator for assistance.

See: I get 'Oops... there was a problem during the request.' or 'Internal Server Error' or '500 error' or the 'White screen of death'. How do I proceed? - Analytics Platform - Piwik