mini-media-player: Problem with first show when i have add mini media player

Hi I have added to my config as i show mini media player. After first login to HA i have an error but when go to other cards/tab and then come back to my first card with mini media player all is ok. Why ?

`resources:

• url: /local/mini-media-player.js?v=0.9.5 type: module
• url: /local/vertical-stack-in-card.js?v=0.0.8 type: js
• url: /local/layout-card.js?ver=7db164 type: js
• url: /local/dark-sky-weather-card.js?ver=0.1.5 type: js
• url: /local/tracker-card.js?v=0.1.5 type: js
• url: /local/slider-entity-row.js type: js

title: Mój dom views:

POKOJE

• id: pokoje icon: mdi:home-assistant title: Pomieszczenia panel: false badges:
  • sun.sun
  • updater.updater cards:
  • id: pokoje_salon type: custom:vertical-stack-in-card show_header_toggle: false title: Salon cards:
    • type: glance show_name: false entities:
      • sensor.salon_temperature
    • type: entities entities:
      • entity: light.salon_stol name: Oświetlenie nad stołem icon: mdi:lightbulb
      • entity: light.salon_kinkiety name: Oświetlenie kinkiety icon: mdi:lightbulb
      • entity: switch.fibaro_system_fgwpef_wall_plug_switch name: Salon gniazdo TV icon: mdi:power-socket-eu
      • entity: light.fibaro_system_fgrgbwm441_rgbw_controller_level_3 name: LEDy 3 icon: mdi:led-strip
      • entity: light.fibaro_system_fgrgbwm441_rgbw_controller_level_4 name: LEDy 4 icon: mdi:led-strip
      • entity: light.fibaro_system_fgrgbwm441_rgbw_controller_level_5 name: LEDy 5 icon: mdi:led-strip
      • entity: light.fibaro_system_fgrgbwm441_rgbw_controller_level_6 name: LEDy 6 icon: mdi:led-strip
      • entity: light.fibaro_system_fgrgbwm441_rgbw_controller_level_7 name: LEDy 7 icon: mdi:led-strip
      • type: divider
    • type: custom:mini-media-player entity: media_player.tv_salon icon: mdi:television hide_controls: false volume_stateless: true hide_volume: false power_color: true show_source: true
    • type: custom:mini-media-player entity: media_player.denon_salon icon: mdi:audio-video hide_controls: false hide_volume: false power_color: true scroll_info: true show_source: true `