Can’t activate pluging

Hi, I tried to install this plugin but I can’t activate it. WordPress says

“Can’t activate plugin – it creates a fatal error”

Please advise.

Fatal error: Uncaught Error: Undefined constant "NONCE_SALT" in /home/mydomain.tld/www/blog/wp-content/plugins/ip-location-block/classes/class-ip-location-block-logs.php:140 Stack trace: #0 /home/mydomain.tld/www/blog/wp-content/plugins/ip-location-block/classes/class-ip-location-block-logs.php(1337): IP_Location_Block_Logs::cipher_mode_key() #1 /home/mydomain.tld/www/blog/wp-content/plugins/ip-location-block/classes/class-ip-location-block-actv.php(36): IP_Location_Block_Logs::delete_cache_entry() #2 /home/mydomain.tld/www/blog/wp-content/plugins/ip-location-block/classes/class-ip-location-block-actv.php(54): IP_Location_Block_Activate::activate_blog() #3 /home/mydomain.tld/www/blog/wp-content/plugins/ip-location-block/ip-location-block.php(57): IP_Location_Block_Activate::activate() #4 /home/mydomain.tld/www/blog/wp-includes/class-wp-hook.php(303): ip_location_block_activate() #5 /home/mydomain.tld/www/blog/wp-includes/class-wp-hook.php(327): WP_Hook->apply_filters() #6 /home/mydomain.tld/www/blog/wp-includes/plugin.php(470): WP_Hook->do_action() #7 /home/mydomain.tld/www/blog/wp-admin/plugins.php(193): do_action() #8 {main} thrown in /home/mydomain.tld/www/blog/wp-content/plugins/ip-location-block/classes/class-ip-location-block-logs.php on line 140

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