translation rejected parameter not recognised bad format PLURAL:GETTEXT|Number....

Ok I will try; it provides something as:

https://translatewiki.net/w/i.php?title=Special:Translate&showMessage=1206%3AWikipedia-library-fce0b2-%3D7B%3D7BPLURAL%3AGETTEXT%3D7CNumber_of_app&group=wikipedia-library&language=fr&filter=&optional=1&action=translate
and 
https://translatewiki.net/w/i.php?title=Special:Translate&showMessage=1206%3AWikipedia-library-b97c94-%3D7B%3D7BPLURAL%3AGETTEXT%3D7CNumber_of_uni&group=wikipedia-library&language=fr&filter=&optional=1&action=translate
ChristianW (talk)‎13:21, 18 September 2018
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