When I try to update Drupal to 8.6.3 i receive the message
CONFIGURATION DIRECTORY: SYNC The directory drupal-8/sites/default/config_acq does not exist.
I don't know what to do. Please help me
Add the following to your
$config_directories = array( CONFIG_SYNC_DIRECTORY => 'sites/default/files', );
For more information take a look to this issue