The import and export tasks can be long running processes. Therefore they are executed using the command line interface of TYPO3.
You can execute the command from the root of your website:
./<DocumentRoot>/typo3/sysext/core/bin/typo3In a composer based TYPO3 installation the TYPO3 CLI executable can be found in the configured folder of your composer.json file in config.bin-dir.
This is very likely outside the website root.
./typo3The available tasks can be found with the TYPO3 CLI:
./typo3 list
Available commands:
yaml
yaml:export Exports a database table into a YAML file
yaml:import Imports data into tables from YAML configurationPlease see the :ref:`Command Reference` for an explanation of the commands.