Getting Fatal error while activating the plugin

getting the following error when trying to activate wpdiscuz plugin

PHP Fatal error:  Uncaught TypeError: array_merge(): Argument #2 must be of type array, string given in /nas/content/live/junkgone/wp-content/plugins/wpdiscuz/class.WpdiscuzCore.php:1674

Stack trace:

#0 /nas/content/live/junkgone/wp-content/plugins/wpdiscuz/class.WpdiscuzCore.php(1674): array_merge()

#1 /nas/content/live/junkgone/wp-content/plugins/wpdiscuz/class.WpdiscuzCore.php(1503): WpdiscuzCore->addNewOptions()

#2 /nas/content/live/junkgone/wp-content/plugins/wpdiscuz/class.WpdiscuzCore.php(242): WpdiscuzCore->pluginNewVersion()

#3 /nas/content/live/junkgone/wp-content/plugins/wpdiscuz/class.WpdiscuzCore.php(216): WpdiscuzCore->activateWpDiscuz()

#4 /nas/content/live/junkgone/wp-includes/class-wp-hook.php(324): WpdiscuzCore->pluginActivation()

#5 /nas/content/live/junkgone/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters()

#6 /nas/content/live/junkgone/wp-includes/plugin.php(517): WP_Hook->do_action()

#7 /nas/content/live/junkgone/wp-admin/includes/plugin.php(703): do_action()

#8 phar:///usr/share/wp-cli.phar/vendor/wp-cli/extension-command/src/Plugin_Command.php(382): activate_plugin()

#9 [internal function]: Plugin_Command->activate()

#10 phar:///usr/share/wp-cli.phar/vendor/wp-cli/wp-cli/php/WP_CLI/Dispatcher/CommandFactory.php(100): call_user_func()

#11 [internal function]: WP_CLI\Dispatcher\CommandFactory::WP_CLI\Dispatcher\{closure}()

#12 phar:///usr/share/wp-cli.phar/vendor/wp-cli/wp-cli/php/WP_CLI/Dispatcher/Subcommand.php(497): call_user_func()

#13 phar:///usr/share/wp-cli.phar/vendor/wp-cli/wp-cli/php/WP_CLI/Runner.php(441): WP_CLI\Dispatcher\Subcommand->invoke()

#14 phar:///usr/share/wp-cli.phar/vendor/wp-cli/wp-cli/php/WP_CLI/Runner.php(464): WP_CLI\Runner->run_command()

#15 phar:///usr/share/wp-cli.phar/vendor/wp-cli/wp-cli/php/WP_CLI/Runner.php(1296): WP_CLI\Runner->run_command_and_exit()

#16 phar:///usr/share/wp-cli.phar/vendor/wp-cli/wp-cli/php/WP_CLI/Bootstrap/LaunchRunner.php(28): WP_CLI\Runner->start()

#17 phar:///usr/share/wp-cli.phar/vendor/wp-cli/wp-cli/php/bootstrap.php(83): WP_CLI\Bootstrap\LaunchRunner->process()

#18 phar:///usr/share/wp-cli.phar/vendor/wp-cli/wp-cli/php/wp-cli.php(32): WP_CLI\bootstrap()

#19 phar:///usr/share/wp-cli.phar/php/boot-phar.php(20): include('...')

#20 /usr/share/wp-cli.phar(4): include('...')

#21 {main}

  thrown in /nas/content/live/junkgone/wp-content/plugins/wpdiscuz/class.WpdiscuzCore.php on line 1674

Fatal error: Uncaught TypeError: array_merge(): Argument #2 must be of type array, string given in /nas/content/live/junkgone/wp-content/plugins/wpdiscuz/class.WpdiscuzCore.php:1674

Stack trace:

#0 /nas/content/live/junkgone/wp-content/plugins/wpdiscuz/class.WpdiscuzCore.php(1674): array_merge()

#1 /nas/content/live/junkgone/wp-content/plugins/wpdiscuz/class.WpdiscuzCore.php(1503): WpdiscuzCore->addNewOptions()

#2 /nas/content/live/junkgone/wp-content/plugins/wpdiscuz/class.WpdiscuzCore.php(242): WpdiscuzCore->pluginNewVersion()

#3 /nas/content/live/junkgone/wp-content/plugins/wpdiscuz/class.WpdiscuzCore.php(216): WpdiscuzCore->activateWpDiscuz()

#4 /nas/content/live/junkgone/wp-includes/class-wp-hook.php(324): WpdiscuzCore->pluginActivation()

#5 /nas/content/live/junkgone/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters()

#6 /nas/content/live/junkgone/wp-includes/plugin.php(517): WP_Hook->do_action()

#7 /nas/content/live/junkgone/wp-admin/includes/plugin.php(703): do_action()

#8 phar:///usr/share/wp-cli.phar/vendor/wp-cli/extension-command/src/Plugin_Command.php(382): activate_plugin()

#9 [internal function]: Plugin_Command->activate()

#10 phar:///usr/share/wp-cli.phar/vendor/wp-cli/wp-cli/php/WP_CLI/Dispatcher/CommandFactory.php(100): call_user_func()

#11 [internal function]: WP_CLI\Dispatcher\CommandFactory::WP_CLI\Dispatcher\{closure}()

#12 phar:///usr/share/wp-cli.phar/vendor/wp-cli/wp-cli/php/WP_CLI/Dispatcher/Subcommand.php(497): call_user_func()

#13 phar:///usr/share/wp-cli.phar/vendor/wp-cli/wp-cli/php/WP_CLI/Runner.php(441): WP_CLI\Dispatcher\Subcommand->invoke()

#14 phar:///usr/share/wp-cli.phar/vendor/wp-cli/wp-cli/php/WP_CLI/Runner.php(464): WP_CLI\Runner->run_command()

#15 phar:///usr/share/wp-cli.phar/vendor/wp-cli/wp-cli/php/WP_CLI/Runner.php(1296): WP_CLI\Runner->run_command_and_exit()

#16 phar:///usr/share/wp-cli.phar/vendor/wp-cli/wp-cli/php/WP_CLI/Bootstrap/LaunchRunner.php(28): WP_CLI\Runner->start()

#17 phar:///usr/share/wp-cli.phar/vendor/wp-cli/wp-cli/php/bootstrap.php(83): WP_CLI\Bootstrap\LaunchRunner->process()

#18 phar:///usr/share/wp-cli.phar/vendor/wp-cli/wp-cli/php/wp-cli.php(32): WP_CLI\bootstrap()

#19 phar:///usr/share/wp-cli.phar/php/boot-phar.php(20): include('...')

#20 /usr/share/wp-cli.phar(4): include('...')

#21 {main}

  thrown in /nas/content/live/junkgone/wp-content/plugins/wpdiscuz/class.WpdiscuzCore.php on line 1674