Drupal scores better than most platforms for Online Marketing success. For a large part of the online marketing community, this might sound cynical owing to popular Drupal myths. However, Drupal is one of the most powerful content management platforms enjoying a high ranking. Drupal SEO-friendly features help websites achieve better ratings on the search engine for the same kind of content. On the periphery, Drupal does this through several inbuilt features:
While working on a Drupal 8 project we suddenly encountered this error after pushing the site to the development server. This had not occurred in our local machines which caught us off guard. A little debugging on the error log revealed the cause of this Drupal message. If you encounter this error unexpectedly, the first thing you should do is to check the error log of the server which is what we did. However, if you do not have access to the error log it and if the issue is only occurring in a particular server after deployment then it is most likely to be a DB issue.