Convertir en format traduisible is an unexpected token. The expected token is '='.

I tried to open a document top be translated and at the final step, the convertion to a translatable format, I got the error message : is an unexpected token. The expected token is '='.

The file is already SDLXLIFF. I tried to open it to see the line where there should be the problem, but it cannot be opened.

Any help please.

Thanks