Fatal error received with version 2.23.1

Running this website with old php and received this error when I updated the plugin to 2.23.1:
Parse error: syntax error, unexpected T_OBJECT_OPERATOR in /home/content/38/4256738/html/karencaseyfusedglass/wordpress/wp-content/plugins/limit-login-attempts-reloaded-bk/core/Shortcodes.php on line 35

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