Can't start working the Related Pages plug-in

Hello!
Having troubles trying to make working the Related Pages plug-in.
I want to display related pages on each page, but there is no any information…

The page has been translated to Lithuania language, but this doesn’t make sense.
The page is running under Gantry 5 framework.

I’ve this page’s structure:

Main services page

/paslaugos -> default

    First Service
    /paslaugos/krastovaizdzio-projektavimas -> modular
	
        Second service
        /paslaugos/krastovaizdzio-projektavimas/_intro -> modular/services
		
	...	
		
    N-th Service
    /paslaugos/nth-service -> modular
	
        Second service
        /paslaugos/nth-service/_intro -> modular/services				

In services.html.twig template I’ve put this code:

{% if config.plugins.relatedpages.enabled and related_pages|length > 0 %}
    <h4>Related Posts</h4>
    {% include 'partials/relatedpages.html.twig' %}
{% endif %}

Plugin’s settings:

enabled: true           
limit: 5                
show_score: true        
score_threshold: 20     
filter:                 
    items:
        @page: /paslaugos
    order:
        by: date        
        dir: desc       
page_in_filter: true    
explicit_pages:
    process: true       
    score: 100          
taxonomy_match:         
    taxonomy: tag       
    taxonomy_taxonomy:
        process: true   
        score_scale:    
            1: 50
            2: 75
            3: 100
    taxonomy_content:
        process: true   
        score_scale:    
            1: 20
            2: 30
            3: 45
            4: 60
            5: 70
            6: 80
            7: 90
            8: 100
content_match:          
    process: false      

And this is debug info:

Grav v1.6.26
infoEnvironment Name: localhost
infoConfiguration reloaded and cached.
infoGantry theme g5_helium selected
infoCache: [false] Setting: [auto] Driver: [file]
infoRelatedPages Plugin cache miss. Rebuilding...
infoSelecting outline (rules, matches, scores):
info

array:3 [
  "page" => array:1 [
    0 => array:1 [
      "paslaugos/krastovaizdzio-projektavimas" => 3
    ]
  ]
  "language" => array:1 [
    0 => array:1 [
      "lt" => 1
    ]
  ]
  "type" => array:1 [
    0 => array:1 [
      "modular" => 2
    ]
  ]
]

info[]
info[]
infoUsing Gantry outline default
infoRouted to page /services/krastovaizdzio-projektavimas (type: modular)
debugCaching particle logo-9608
debugCaching particle social-3171
debugCaching particle logo-9571
debugCaching particle copyright-1736
debugCaching particle horizontalmenu-9034
debugCaching particle totop-8670
debugCaching particle mobile-menu-5697

Plug-in doesn’t acquire any data…

Nobody has tried a similar website structure?