magento2 – The MySQL server is gone Zend / Db / Statement /

Because my Information Access Provider (ISP) failed to create many categories, this was said:

/usr/bin/php-7.1 bin / magento setup: update

it lasted about 15 minutes with a lot of output, and then ended with this:

Failed to import: Warning: PDOStatement :: execute (): The MySQL server is gone in /var/sites/j/ Pdo.php online. 228

Is this normal?

linux, php 7.1, unknown magento version because the site and the control panel are now dead.