Number.php throws warning when using apa.csl and specific metadata

[ThoWagen]

Please follow the general troubleshooting steps first:

• [x] I read the README and followed the instructions.
• [x] I am sure that the used CSL metadata follows the CSL schema.
• [x] I use a valid CSL stylesheet

Bug reports:

Usind the citation-format apa a warning is thrown by Rendering/Number.php

Warning: A non-numeric value encountered in /***/vendor/seboettg/citeproc-php/src/Rendering/Number.php on line 146

Used CSL stylesheet:

apa.csl

Used CSL metadata

Please replace these lines with your used metadata, for instance:

[
    {
        "type":"misc",
        "author":
            [
                {"given":"Alfred","family":"Roller"},
                {"given":"Richard","family":"Strauss"},
                {"given":"Franzpeter","family":"Messmer"}
            ],
        "accessed":"14.08.2023",
        "issued": {"date-parts":[["1996"]],"literal":"1996"},
        "edition":"[Nachdr. der Ausg.] Berlin, 1910 \/ mit einer Einf. von Franzpeter Messmer",
        "number-of-pages":"50 Kunstbl.",
        "dimensions":"42 x 30 cm",
        "ISBN":"3795703301",
        "medium":"graphic",
        "publisher":"Verl. Dr. Richard Strauss",
        "publisher-place":"Wien",
        "title":"Richard Strauss, Der Rosenkavalier : Figurinen und Bu\u0308hnenbildentwu\u0308rfe",
        "language":"ger"
    }
]