Javascript error in media upload popup on multisite
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I’m getting an error on WordPress in subsites of a multi-site installation. The main blog is fine but on the subsites if I try and upload media with the Add Media button or Set Featured Image link I get the following javascript error after selecting the file to upload:
plupload.full.min.js?ver=2.1.8:13 Uncaught TypeError: Cannot read property ‘2’ of null
at Object.h [as parseSize] (plupload.full.min.js?ver=2.1.8:13)
at o.Uploader.<anonymous> (plupload.full.min.js?ver=2.1.8:29)
at Array.<anonymous> (plupload.full.min.js?ver=2.1.8:29)
at i (plupload.full.min.js?ver=2.1.8:13)
at plupload.full.min.js?ver=2.1.8:13
at plupload.full.min.js?ver=2.1.8:29
at o.Uploader.<anonymous> (plupload.full.min.js?ver=2.1.8:29)
at Array.<anonymous> (plupload.full.min.js?ver=2.1.8:29)
at i (plupload.full.min.js?ver=2.1.8:13)
at plupload.full.min.js?ver=2.1.8:13
The plan was to use WP as a headless CMS. I’ve tried switching themes and have no plugins installed.
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