Old Version Needed

Hi, I need access to an older version of this plugin. Seems the recent update broke a client’s site and I need a link to 2.0.52.

Or if you know how to fix this?

Error Details
=============
An error of type E_ERROR was caused in line 32 of the file /var/www/vhosts/XXX/httpdocs/wp-content/plugins/instantsearch-for-woocommerce/instantsearch-for-woocommerce.php. Error message: Uncaught Error: Call to undefined function wp_is_block_theme() in /var/www/vhosts/XXX/httpdocs/wp-content/plugins/instantsearch-for-woocommerce/instantsearch-for-woocommerce.php:32
Stack trace:
#0 /var/www/vhosts/XXX/httpdocs/wp-settings.php(409): include_once()
#1 /var/www/vhosts/XXX/httpdocs/wp-config.php(96): require_once('/var/www/vhosts...')
#2 /var/www/vhosts/XXX/httpdocs/wp-load.php(50): require_once('/var/www/vhosts...')
#3 /var/www/vhosts/XXX/httpdocs/wp-admin/admin-ajax.php(22): require_once('/var/www/vhosts...')
#4 {main}
  thrown