Please post you code properly as NO one can evaluate what you wrote without proper indentation. To us your code looks like this which is totally wrong:
custom_fields:
top:
card:
type: ‘custom:button-card’
entity: null
icon: ‘mdi:arrow-up-circle-outline’
template: cover_inside_button
tap_action:
action: call-service
service: cover.open_cover
service_data:
entity_id: ‘[[[ return entity.entity_id ]]]’
bottom:
card:
type: ‘custom:button-card’
entity: null
icon: ‘mdi:arrow-down-circle-outline’
template: cover_inside_button
tap_action:
action: call-service
service: cover.close_cover
service_data:
entity_id: ‘[[[ return entity.entity_id ]]]’
stop:
card:
type: ‘custom:button-card’
entity: null
icon: ‘mdi:stop-circle-outline’
template: cover_inside_button
tap_action:
action: call-service
service: cover.stop_cover
service_data:
entity_id: ‘[[[ return entity.entity_id ]]]’