Cannot redeclare wordpress_importer_init()

We first updated our site to WordPress 5.6 and then ran into a black screen problem.
We installed the enable-jquery-migrate-helper plugin.
And we updated all our plugins.
But the problem was not solved.
We thought the problem might be with our site theme.
Disable the previous theme and reload the theme(OUR THEME IS: Industrial - Factory Business WordPress Theme from )

The black screen problem was fixed when you clicked on the site,
But when entering our admin, we encounter this error:

"Fatal error: Cannot redeclare wordpress_importer_init() (previously declared in /opt/bitnami/apps/wordpress/htdocs/wp-content/plugins/wordpress-importer/wordpress-importer.php:51) in /opt/bitnami/apps/wordpress/htdocs/wp-content/plugins/anps_theme_plugin/importer/wordpress-importer.php on line 47

( we can connect with FTP to our site, after deleting this theme we access our WP admin! but we need to install this theme to work our website correctly.

[we contact Bitnami stack WordPress and get this answer:
am afraid this problem seems to be directly related to the theme itself and do not really know much details about it. In these cases, it is a good idea to reach out to the developer of the theme for further assistance. Could you please try that?

From what I can see at a first glance, ThemeForest marks this theme as compatible with WordPress versions 5.5.X , so that will more than likely be the case.]

how can I fix this problem?