Error when editing post – undefined (reading ‘length’)

  • Hi, when I put a qr code and the go to edit the page again, the screen stays blank and I get the following error message in the console:

    act-dom.min.js?ver=18.2.0:10 TypeError: Cannot read properties of undefined (reading 'length')
    at convertStr (index.js:52:18)
    at QRCodeSVG.render (index.js:441:1)
    at Z (element.min.js?ver=b3bda690cfc516378771:9:7093)
    at B (element.min.js?ver=b3bda690cfc516378771:9:6281)
    at B (element.min.js?ver=b3bda690cfc516378771:9:6292)
    at G (element.min.js?ver=b3bda690cfc516378771:9:7257)
    at Y (element.min.js?ver=b3bda690cfc516378771:9:6804)
    at B (element.min.js?ver=b3bda690cfc516378771:9:6197)
    at Br (blocks.min.js?ver=639e14271099dc3d85bf:10:4961)
    at blocks.min.js?ver=639e14271099dc3d85bf:10:33960
l

    Any help is appreciated.

    WP 6.2
    no other plugin installed

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