The upgrade file finished downloading and your file permissions allow for local install.

• Your existing /core/ folder will be backed up in /backups/core-
  Warning: Use of undefined constant BIGTREE_VERSION - assumed 'BIGTREE_VERSION' (this will throw an Error in a future version of PHP) in /home/bidbyte/diagnostico.bidbyte.tec.br/core/admin/modules/developer/upgrade/check-file.php on line 30
  BIGTREE_VERSION/
• Your existing database will be backed up as /backups/core-
  Warning: Use of undefined constant BIGTREE_VERSION - assumed 'BIGTREE_VERSION' (this will throw an Error in a future version of PHP) in /home/bidbyte/diagnostico.bidbyte.tec.br/core/admin/modules/developer/upgrade/check-file.php on line 31
  BIGTREE_VERSION/backup.sql

The upgrade file has finished downloading but the web server can not write directly to the root or /core/ folder. You'll need to enter your
Notice: Undefined variable: updater in /home/bidbyte/diagnostico.bidbyte.tec.br/core/admin/modules/developer/upgrade/check-file.php on line 34

Notice: Trying to get property 'Method' of non-object in /home/bidbyte/diagnostico.bidbyte.tec.br/core/admin/modules/developer/upgrade/check-file.php on line 34
credentials below so that BigTree can upgrade.

• Your existing /core/ folder will be backed up in /backups/core-
  Warning: Use of undefined constant BIGTREE_VERSION - assumed 'BIGTREE_VERSION' (this will throw an Error in a future version of PHP) in /home/bidbyte/diagnostico.bidbyte.tec.br/core/admin/modules/developer/upgrade/check-file.php on line 36
  BIGTREE_VERSION/
• Your existing database will be backed up as /backups/core-
  Warning: Use of undefined constant BIGTREE_VERSION - assumed 'BIGTREE_VERSION' (this will throw an Error in a future version of PHP) in /home/bidbyte/diagnostico.bidbyte.tec.br/core/admin/modules/developer/upgrade/check-file.php on line 37
  BIGTREE_VERSION/backup.sql