Problem when moving a Drupal site from a server to a farm

Hello and sorry to bother you again.

I have a site in temporary production server. Now I got the “final” production environment with two front-ends and a database/file-server.

I had a simple idea how to move the site from one server to another: copy the database to the farm database server, copy the drupal directory to front-end (one to start with), change settings.php to point to the database in database server, copy the nginx conf-file and just run it.

Now when trying to run for example “drush cr” I get:

  PHP Fatal error:  Class name must be a valid object or a string in /srv/site-d8/core/modules/field/src/FieldStorageConfigStorage.php on line 155

Fatal error: Class name must be a valid object or a string in /srv/site-d8/core/modules/field/src/FieldStorageConfigStorage.php on line 155
Drush command terminated abnormally due to an unrecoverable error.   [error]
Error: Class name must be a valid object or a string in
/srv/site-d8/core/modules/field/src/FieldStorageConfigStorage.php, line 155

The same error comes when I try open the site itself by browser. I have been fighting with this for whole the day and getting really frustrated. I found some instructions on the google, but though I changed the drupal code (no-no, I know) to check the availability of the class, but then the error seems to propagate somewhere else.

The environments should be fully similar, nginx as a web server

The problem is that the site should be running there next Monday plus also another site I haven’t even been trying to move.

Any help, anyone?

wbr hank

Drupal version: 


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