Problems creating structured text files

Question

Anzahl erfolgreicher Ausführungen: 0
Anzahl von Fehlern: 7
Fehlermeldung: 
[
  {
    inputText: rooms,devices
    message: ReferencedEntityDoesNotExist
    status: Failed
  },
  {
    inputText: ` `{@rooms} {@keywords} 0,23 {@units} .
    message:  Error: normalized text is empty.
    status: Failed
  },
  {
    inputText: ` `{@rooms} {@keywords} 500 {@units} .
    message:  Error: normalized text is empty.
    status: Failed
  },
  {
    inputText: ` `{@rooms} {@keywords} {@defects}
    message:  Error: normalized text is empty.
    status: Failed
  },
  {
    inputText: ` `{@rooms} {@keywords} {@devices} {@defects}
    message:  Error: normalized text is empty.
    status: Failed
  },
  {
    inputText: ` `{@devices} {@rooms} {@keywords} {@defects}
    message:  Error: normalized text is empty.
    status: Failed
  },
  {
    inputText: ` `{@rooms} {@keywords} {@defects} {@keywords}
    message:  Error: normalized text is empty.
    status: Failed
  }
].
This is the Errorfile.

And this is the my Textfile:
@ list rooms =
-	english
-	spanish
-	french
-	german
@ list keywords =
-	python
-	java
-	net
@ list units =
-	Max
-	Moritz
-	Klaus
#TrainingSentences1
-	{@rooms} {@keywords} 0,23 {@units}.
-	{@rooms} {@keywords}  500 {@units}.
-	In der {@rooms} ist die {@devices} defekt.

What am I doing wrong
Greetings Thomas