Telecom server panel check (#14523)

Resources/Locale/en-US/radio/components/encryption-key-component.ftl

@@ -3,6 +3,7 @@ encryption-key-slots-already-full = There is no place for another encryption key
 encryption-keys-all-extracted = You pop out the encryption keys!
 encryption-keys-no-keys = This device has no encryption keys!
 encryption-keys-are-locked = Encryption key slots are locked!
+encryption-keys-panel-locked = Open maintenance panel first!
 
 examine-encryption-channels-prefix = Available frequencies:
 examine-encryption-channel = [color={$color}]{$key} for {$id} ({$freq})[/color]