GetSimpleCMS-3.4.0.9 Testing

[krlllo]

I am having this issue on a new website using GetSimpleCMS-3.4.0.9 with grill template.
If I don't use the navigation menu it disappears.
I know that some plugins are not working on this version and this is expected, but I still think I should let you know about this issue.

( ! ) Notice: Undefined index: filter in C:\Users\newsite\Documents\SERVER\www\newsite\plugins\i18n_navigation\frontend.class.php on line 199
Call Stack
# Time Memory Function Location
1 0.0001 391952 {main}( ) ...\index.php:0
2 0.0001 395176 include( 'C:\Users\newsite\Documents\SERVER\www\newsite\admin\inc\common.php' ) ...\index.php:29
3 0.0089 566008 require_once( 'C:\Users\newsite\Documents\SERVER\www\newsite\admin\base.php' ) ...\common.php:798
4 0.0104 576096 includeTheme( ) ...\base.php:101
5 0.0106 576392 include( 'C:\Users\newsite\Documents\SERVER\www\newsite\theme\Grill\index.php' ) ...\basic.php:2550
6 0.0113 577344 include( 'C:\Users\newsite\Documents\SERVER\www\newsite\theme\Grill\main-header.inc.php' ) ...\index.php:49
7 0.0118 577920 get_i18n_navigation( ) ...\main-header.inc.php:21
8 0.0118 577920 I18nNavigationFrontend::outputMenu( ) ...\i18n_navigation.php:163
9 0.0118 577944 I18nNavigationFrontend::getMenu( ) ...\frontend.class.php:259
10 0.0126 588176 I18nNavigationFrontend::getMenuImpl( ) ...\frontend.class.php:176





( ! ) Warning: count(): Parameter must be an array or an object that implements Countable in C:\Users\user\Documents\SERVER\www\newsite\plugins\i18n_navigation\frontend.class.php on line 219
Call Stack
# Time Memory Function Location
1 0.0001 391952 {main}( ) ...\index.php:0
2 0.0001 395176 include( 'C:\Users\user\Documents\SERVER\www\newsite\admin\inc\common.php' ) ...\index.php:29
3 0.0089 566008 require_once( 'C:\Users\user\Documents\SERVER\www\newsite\admin\base.php' ) ...\common.php:798
4 0.0104 576096 includeTheme( ) ...\base.php:101
5 0.0106 576392 include( 'C:\Users\user\Documents\SERVER\www\newsite\theme\Grill\index.php' ) ...\basic.php:2550
6 0.0113 577344 include( 'C:\Users\user\Documents\SERVER\www\newsite\theme\Grill\main-header.inc.php' ) ...\index.php:49
7 0.0118 577920 get_i18n_navigation( ) ...\main-header.inc.php:21
8 0.0118 577920 I18nNavigationFrontend::outputMenu( ) ...\i18n_navigation.php:163
9 0.0118 577944 I18nNavigationFrontend::getMenu( ) ...\frontend.class.php:259
10 0.0126 588176 I18nNavigationFrontend::getMenuImpl( ) ...\frontend.class.php:176