If you get the following error while exporting database, you can follow the steps below:
can’t find the file at https://xx.xx.xx.xx:8443/domains/databases/phpMyAdmin/export.php.
Some times the memory limit for php is too low for performing this operation. So we need to increase the memory_limit.
For that go to:
/usr/local/psa/admin/conf/
Edit the php.ini file and Iincrease the memory_limit for the file.
Now restart the plesk by using the below command:
/etc/init.d/psa stop /etc/init.d/psa start