Version 2.0.6 throws a fatal error

Just updated to 2.0.6 and had to go into Recovery mode to get into the site and rollback Plausible to 2.0.5. This is the error code that the Plugins screen showed me:

An error of type <span style="font-family: inherit; font-size: 0.8rem;">E_ERROR</span> was caused in line <span style="font-family: inherit; font-size: 0.8rem;">171</span> of the file .../public_html/wp-content/plugins/plausible-analytics/src/Helpers.php. Error message: Uncaught Error: Call to undefined function Plausible\Analytics\WP\phptrailingslashit() in .../public_html/wp-content/plugins/plausible-analytics/src/Helpers.php:171 Stack trace: #0 .../public_html/wp-content/plugins/plausible-analytics/src/Helpers.php(133): Plausible\Analytics\WP\Helpers::get_proxy_resources() #1 .../public_html/wp-content/plugins/plausible-analytics/src/Proxy.php(56): Plausible\Analytics\WP\Helpers::get_proxy_resource() #2 .../public_html/wp-content/plugins/plausible-analytics/src/Plugin.php(47): Plausible\Analytics\WP\Proxy->__construct() #3 .../public_html/wp-includes/class-wp-hook.php(324): Plausible\Analytics\WP\Plugin->register_services() #4 .../public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters() #5 .../public_html/wp-includes/plugin.php(517): WP_Hook->do_action() #6 .../public_html/wp-settings.php(506): do_action() #7 .../public_html/wp-config.php(109): require_once('/home/u53289429...') #8 .../public_html/wp-load.php(50): require_once('/home/u53289429...') #9 .../public_html/wp-login.php(12): require('/home/u53289429...') #10 {main} thrown