Review the following before running an upgrade.
Make sure your system complies with the compatibility matrix for the version you are upgrading to. See the Compatibility Matrix for supported PHP, database, and web server versions.
Run the upgrade process on a development or staging instance first. Only deploy to production after testing.
Before upgrading, create a backup of both your instance files and your database.
Before running any upgrade commands, ensure your SuiteCRM 8 instance has APP_ENV set to prod in your .env or .env.local file.
The upgrade process may remove non-core files or directories under the root folder or the public/legacy/ folder. Review any customisations before upgrading.
By default, the upgrade commands set error_reporting to a less strict mode to suppress warnings:
E_ALL & ~E_DEPRECATED & ~E_STRICT & ~E_NOTICE & ~E_WARNING
To apply a stricter mode, add -vvv to each command. This sets error_reporting to E_ALL.
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