Emojis not working

Hi,
I get “???” when I try so send emojis on my android app through my NC 17.

I did everythin written here: https://docs.nextcloud.com/server/stable/admin_manual/configuration_database/mysql_4byte_support.html

MariaDB [nextcloud]> show variables like 'innodb_file_format';

±-------------------±----------+
| Variable_name | Value |
±-------------------±----------+
| innodb_file_format | Barracuda |
±-------------------±----------+
1 row in set (0.01 sec)

MariaDB [nextcloud]> show variables like ‘innodb_file_per_table’;
±----------------------±------+
| Variable_name | Value |
±----------------------±------+
| innodb_file_per_table | ON |
±----------------------±------+
1 row in set (0.01 sec)

MariaDB [nextcloud]> show variables like ‘innodb_large_prefix’;
±--------------------±------+
| Variable_name | Value |
±--------------------±------+
| innodb_large_prefix | ON |
±--------------------±------+
1 row in set (0.00 sec)

Server version: 10.1.41-MariaDB-0+deb9u1 Debian 9.9

OS: Unknown 9.11 stretch
Kernel: x86_64 Linux 5.0.21-2-pve

and

MariaDB [(none)]> SELECT NAME, SPACE, FILE_FORMAT FROM INFORMATION_SCHEMA.INNODB_SYS_TABLES WHERE NAME like “nextcloud%”;
±----------------------------------------------------±------±------------+
| NAME | SPACE | FILE_FORMAT |
±----------------------------------------------------±------±------------+
| nextcloud/oc_accounts | 42885 | Barracuda |
| nextcloud/oc_activity | 42886 | Barracuda |
| nextcloud/oc_activity_mq | 42887 | Barracuda |
| nextcloud/oc_addressbookchanges | 42888 | Barracuda |
| nextcloud/oc_addressbooks | 42889 | Barracuda |
| nextcloud/oc_appconfig | 42890 | Barracuda |
| nextcloud/oc_audioplayer_albums | 42891 | Barracuda |
| nextcloud/oc_audioplayer_artists | 42892 | Barracuda |
| nextcloud/oc_audioplayer_genre | 42893 | Barracuda |
| nextcloud/oc_audioplayer_playlist_tracks | 42894 | Barracuda |
| nextcloud/oc_audioplayer_playlists | 42895 | Barracuda |
| nextcloud/oc_audioplayer_stats | 42896 | Barracuda |
| nextcloud/oc_audioplayer_streams | 42897 | Barracuda |
| nextcloud/oc_audioplayer_tracks | 42898 | Barracuda |
| nextcloud/oc_authtoken | 42899 | Barracuda |
| nextcloud/oc_bookmarks | 42900 | Barracuda |
| nextcloud/oc_bookmarks_folders | 42901 | Barracuda |
| nextcloud/oc_bookmarks_folders_bookmarks | 42902 | Barracuda |
| nextcloud/oc_bookmarks_tags | 42903 | Barracuda |
| nextcloud/oc_bruteforce_attempts | 42904 | Barracuda |
| nextcloud/oc_calendar_invitations | 42905 | Barracuda |
| nextcloud/oc_calendar_resources | 42906 | Barracuda |
| nextcloud/oc_calendar_rooms | 42907 | Barracuda |
| nextcloud/oc_calendarchanges | 42908 | Barracuda |
| nextcloud/oc_calendarobjects | 42909 | Barracuda |
| nextcloud/oc_calendarobjects_props | 42910 | Barracuda |
| nextcloud/oc_calendars | 42911 | Barracuda |
| nextcloud/oc_calendarsubscriptions | 42912 | Barracuda |
| nextcloud/oc_cards | 42913 | Barracuda |
| nextcloud/oc_cards_properties | 42914 | Barracuda |
| nextcloud/oc_carnet_metadata | 42915 | Barracuda |
| nextcloud/oc_circles_circles | 42916 | Barracuda |
| nextcloud/oc_circles_clouds | 42917 | Barracuda |
| nextcloud/oc_circles_groups | 42918 | Barracuda |
| nextcloud/oc_circles_links | 42919 | Barracuda |
| nextcloud/oc_circles_members | 42920 | Barracuda |
| nextcloud/oc_circles_shares | 42921 | Barracuda |
| nextcloud/oc_cms_pico_websites | 42922 | Barracuda |
| nextcloud/oc_collres_accesscache | 42923 | Barracuda |
| nextcloud/oc_collres_collections | 42924 | Barracuda |
| nextcloud/oc_collres_resources | 42925 | Barracuda |
| nextcloud/oc_comments | 42926 | Barracuda |
| nextcloud/oc_comments_read_markers | 42927 | Barracuda |
| nextcloud/oc_cookbook_keywords | 42928 | Barracuda |
| nextcloud/oc_cookbook_names | 42929 | Barracuda |
| nextcloud/oc_cospend_bill_owers | 42930 | Barracuda |
| nextcloud/oc_cospend_bills | 42931 | Barracuda |
| nextcloud/oc_cospend_ext_projects | 42932 | Barracuda |
| nextcloud/oc_cospend_members | 42933 | Barracuda |
| nextcloud/oc_cospend_projects | 42934 | Barracuda |
| nextcloud/oc_cospend_shares | 42935 | Barracuda |
| nextcloud/oc_credentials | 42936 | Barracuda |
| nextcloud/oc_dashboard_events | 42937 | Barracuda |
| nextcloud/oc_dashboard_settings | 42938 | Barracuda |
| nextcloud/oc_dav_shares | 42939 | Barracuda |
| nextcloud/oc_deck_assigned_labels | 42940 | Barracuda |
| nextcloud/oc_deck_assigned_users | 42941 | Barracuda |
| nextcloud/oc_deck_attachment | 42942 | Barracuda |
| nextcloud/oc_deck_board_acl | 42943 | Barracuda |
| nextcloud/oc_deck_boards | 42944 | Barracuda |
| nextcloud/oc_deck_cards | 42945 | Barracuda |
| nextcloud/oc_deck_labels | 42946 | Barracuda |
| nextcloud/oc_deck_stacks | 42947 | Barracuda |
| nextcloud/oc_directlink | 42948 | Barracuda |
| nextcloud/oc_e2e_encryption_lock | 42949 | Barracuda |
| nextcloud/oc_federated_reshares | 42950 | Barracuda |
| nextcloud/oc_file_locks | 42951 | Barracuda |
| nextcloud/oc_filecache | 42952 | Barracuda |
| nextcloud/oc_files_antivirus | 42953 | Barracuda |
| nextcloud/oc_files_avir_status | 42954 | Barracuda |
| nextcloud/oc_files_trash | 42955 | Barracuda |
| nextcloud/oc_flow_checks | 42956 | Barracuda |
| nextcloud/oc_flow_operations | 42957 | Barracuda |
| nextcloud/oc_fulltextsearch_indexes | 42958 | Barracuda |
| nextcloud/oc_fulltextsearch_ticks | 42959 | Barracuda |
| nextcloud/oc_gpxedit_options | 42960 | Barracuda |
| nextcloud/oc_gpxedit_tile_servers | 42961 | Barracuda |
| nextcloud/oc_gpxmotion_options | 42962 | Barracuda |
| nextcloud/oc_gpxmotion_tile_server | 42963 | Barracuda |
| nextcloud/oc_gpxpod_directories | 42964 | Barracuda |
| nextcloud/oc_gpxpod_options_values | 42965 | Barracuda |
| nextcloud/oc_gpxpod_pictures | 42966 | Barracuda |
| nextcloud/oc_gpxpod_tile_servers | 42967 | Barracuda |
| nextcloud/oc_gpxpod_tracks | 42968 | Barracuda |
| nextcloud/oc_group_admin | 42969 | Barracuda |
| nextcloud/oc_group_folders | 42970 | Barracuda |
| nextcloud/oc_group_folders_acl | 42971 | Barracuda |
| nextcloud/oc_group_folders_groups | 42972 | Barracuda |
| nextcloud/oc_group_folders_manage | 42973 | Barracuda |
| nextcloud/oc_group_folders_trash | 42974 | Barracuda |
| nextcloud/oc_group_user | 42975 | Barracuda |
| nextcloud/oc_groups | 42976 | Barracuda |
| nextcloud/oc_jobs | 42977 | Barracuda |
| nextcloud/oc_login_flow_v2 | 42978 | Barracuda |
| nextcloud/oc_mail_accounts | 42979 | Barracuda |
| nextcloud/oc_mail_aliases | 42980 | Barracuda |
| nextcloud/oc_mail_attachments | 42981 | Barracuda |
| nextcloud/oc_mail_coll_addresses | 42982 | Barracuda |
| nextcloud/oc_mail_mailboxes | 42983 | Barracuda |
| nextcloud/oc_maps_address_geo | 42984 | Barracuda |
| nextcloud/oc_maps_apikeys | 42985 | Barracuda |
| nextcloud/oc_maps_device_points | 42986 | Barracuda |
| nextcloud/oc_maps_devices | 42987 | Barracuda |
| nextcloud/oc_maps_favorites | 42988 | Barracuda |
| nextcloud/oc_maps_photos | 42989 | Barracuda |
| nextcloud/oc_maps_tracks | 42990 | Barracuda |
| nextcloud/oc_migrations | 42991 | Barracuda |
| nextcloud/oc_mimetypes | 42992 | Barracuda |
| nextcloud/oc_mindmaps | 42993 | Barracuda |
| nextcloud/oc_mindmaps_acl | 42994 | Barracuda |
| nextcloud/oc_mindmaps_nodes | 42995 | Barracuda |
| nextcloud/oc_mounts | 42996 | Barracuda |
| nextcloud/oc_music_albums | 42997 | Barracuda |
| nextcloud/oc_music_ampache_sessions | 42998 | Barracuda |
| nextcloud/oc_music_ampache_users | 42999 | Barracuda |
| nextcloud/oc_music_artists | 43000 | Barracuda |
| nextcloud/oc_music_cache | 43001 | Barracuda |
| nextcloud/oc_music_playlists | 43002 | Barracuda |
| nextcloud/oc_music_tracks | 43003 | Barracuda |
| nextcloud/oc_notes_meta | 43004 | Barracuda |
| nextcloud/oc_notifications | 43005 | Barracuda |
| nextcloud/oc_notifications_pushtokens | 43006 | Barracuda |
| nextcloud/oc_oauth2_access_tokens | 43007 | Barracuda |
| nextcloud/oc_oauth2_clients | 43008 | Barracuda |
| nextcloud/oc_ocdownloader_adminsettings | 43009 | Barracuda |
| nextcloud/oc_ocdownloader_personalsettings | 43010 | Barracuda |
| nextcloud/oc_ocdownloader_queue | 43011 | Barracuda |
| nextcloud/oc_ocsms_config | 43012 | Barracuda |
| nextcloud/oc_ocsms_conversation_read_states | 43013 | Barracuda |
| nextcloud/oc_ocsms_sendmessage_queue | 43014 | Barracuda |
| nextcloud/oc_ocsms_smsdatas | 43015 | Barracuda |
| nextcloud/oc_ocsms_user_datas | 43016 | Barracuda |
| nextcloud/oc_passman_credentials | 43017 | Barracuda |
| nextcloud/oc_passman_delete_vault_request | 43018 | Barracuda |
| nextcloud/oc_passman_files | 43019 | Barracuda |
| nextcloud/oc_passman_revisions | 43020 | Barracuda |
| nextcloud/oc_passman_share_request | 43021 | Barracuda |
| nextcloud/oc_passman_sharing_acl | 43022 | Barracuda |
| nextcloud/oc_passman_vaults | 43023 | Barracuda |
| nextcloud/oc_passwords_entity_challenge | 43024 | Barracuda |
| nextcloud/oc_passwords_entity_folder | 43025 | Barracuda |
| nextcloud/oc_passwords_entity_folder_revision | 43026 | Barracuda |
| nextcloud/oc_passwords_entity_keychain | 43027 | Barracuda |
| nextcloud/oc_passwords_entity_password | 43028 | Barracuda |
| nextcloud/oc_passwords_entity_password_revision | 43029 | Barracuda |
| nextcloud/oc_passwords_entity_session | 43030 | Barracuda |
| nextcloud/oc_passwords_entity_share | 43031 | Barracuda |
| nextcloud/oc_passwords_entity_tag | 43032 | Barracuda |
| nextcloud/oc_passwords_entity_tag_revision | 43033 | Barracuda |
| nextcloud/oc_passwords_relation_password_tag | 43034 | Barracuda |
| nextcloud/oc_phonetrack_devices | 43035 | Barracuda |
| nextcloud/oc_phonetrack_filtersb | 43036 | Barracuda |
| nextcloud/oc_phonetrack_geofences | 43037 | Barracuda |
| nextcloud/oc_phonetrack_options | 43038 | Barracuda |
| nextcloud/oc_phonetrack_points | 43039 | Barracuda |
| nextcloud/oc_phonetrack_proxims | 43040 | Barracuda |
| nextcloud/oc_phonetrack_pubshares | 43041 | Barracuda |
| nextcloud/oc_phonetrack_sessions | 43042 | Barracuda |
| nextcloud/oc_phonetrack_shares | 43043 | Barracuda |
| nextcloud/oc_phonetrack_tileserver | 43044 | Barracuda |
| nextcloud/oc_polls_comments | 43045 | Barracuda |
| nextcloud/oc_polls_events | 43046 | Barracuda |
| nextcloud/oc_polls_notif | 43047 | Barracuda |
| nextcloud/oc_polls_options | 43048 | Barracuda |
| nextcloud/oc_polls_votes | 43049 | Barracuda |
| nextcloud/oc_preferences | 43050 | Barracuda |
| nextcloud/oc_preview_generation | 43051 | Barracuda |
| nextcloud/oc_privacy_admins | 43052 | Barracuda |
| nextcloud/oc_properties | 43053 | Barracuda |
| nextcloud/oc_quicknotes_colors | 43054 | Barracuda |
| nextcloud/oc_quicknotes_notes | 43055 | Barracuda |
| nextcloud/oc_quicknotes_shares | 43056 | Barracuda |
| nextcloud/oc_quicknotes_tasks | 43057 | Barracuda |
| nextcloud/oc_radio_stations | 43058 | Barracuda |
| nextcloud/oc_ransomware_detection | 43059 | Barracuda |
| nextcloud/oc_richdocuments_assets | 43060 | Barracuda |
| nextcloud/oc_richdocuments_direct | 43061 | Barracuda |
| nextcloud/oc_richdocuments_member | 43062 | Barracuda |
| nextcloud/oc_richdocuments_wopi | 43063 | Barracuda |
| nextcloud/oc_schedulingobjects | 43064 | Barracuda |
| nextcloud/oc_sensorlogger_data_types | 43065 | Barracuda |
| nextcloud/oc_sensorlogger_device_data_types | 43066 | Barracuda |
| nextcloud/oc_sensorlogger_device_groups | 43067 | Barracuda |
| nextcloud/oc_sensorlogger_device_types | 43068 | Barracuda |
| nextcloud/oc_sensorlogger_devices | 43069 | Barracuda |
| nextcloud/oc_sensorlogger_logs | 43070 | Barracuda |
| nextcloud/oc_share | 43071 | Barracuda |
| nextcloud/oc_share_external | 43072 | Barracuda |
| nextcloud/oc_storages | 43073 | Barracuda |
| nextcloud/oc_systemtag | 43074 | Barracuda |
| nextcloud/oc_systemtag_group | 43075 | Barracuda |
| nextcloud/oc_systemtag_object_mapping | 43076 | Barracuda |
| nextcloud/oc_talk_commands | 43077 | Barracuda |
| nextcloud/oc_talk_guests | 43078 | Barracuda |
| nextcloud/oc_talk_participants | 43079 | Barracuda |
| nextcloud/oc_talk_rooms | 43080 | Barracuda |
| nextcloud/oc_talk_signaling | 43081 | Barracuda |
| nextcloud/oc_text_documents | 43082 | Barracuda |
| nextcloud/oc_text_sessions | 43083 | Barracuda |
| nextcloud/oc_text_steps | 43084 | Barracuda |
| nextcloud/oc_timetracker_client | 43085 | Barracuda |
| nextcloud/oc_timetracker_locked_project_allowed_tag | 43086 | Barracuda |
| nextcloud/oc_timetracker_project | 43087 | Barracuda |
| nextcloud/oc_timetracker_tag | 43088 | Barracuda |
| nextcloud/oc_timetracker_timeline | 43089 | Barracuda |
| nextcloud/oc_timetracker_timeline_entry | 43090 | Barracuda |
| nextcloud/oc_timetracker_user_to_client | 43091 | Barracuda |
| nextcloud/oc_timetracker_user_to_project | 43092 | Barracuda |
| nextcloud/oc_timetracker_work_interval | 43093 | Barracuda |
| nextcloud/oc_timetracker_workinterval_to_tag | 43094 | Barracuda |
| nextcloud/oc_trusted_servers | 43095 | Barracuda |
| nextcloud/oc_twofactor_backupcodes | 43096 | Barracuda |
| nextcloud/oc_twofactor_providers | 43097 | Barracuda |
| nextcloud/oc_users | 43098 | Barracuda |
| nextcloud/oc_users_external | 43099 | Barracuda |
| nextcloud/oc_vcategory | 43100 | Barracuda |
| nextcloud/oc_vcategory_to_object | 43101 | Barracuda |
| nextcloud/oc_weather_city | 43102 | Barracuda |
| nextcloud/oc_weather_config | 43103 | Barracuda |
| nextcloud/oc_whats_new | 43104 | Barracuda |
±----------------------------------------------------±------±------------+
220 rows in set (0.01 sec)