After successful upgrade from OJS 3.0.1 to OJS 3.0.2 I receive errors while trying to view pdf galleys through this plugin. Although pdf can be downloaded. Downgrading the plugin has no effect. Errors in browser console:
Uncaught TypeError: Cannot read property 'firstElementChild' of null
at PDFViewer (viewer.js:3918)
at Object.pdfViewInitialize [as initialize] (viewer.js:4619)
at HTMLDocument.webViewerLoad (viewer.js:6179)
Uncaught Error: Unknown action from worker: ready
at error (pdf.js:254)
at Worker.messageHandlerComObjOnMessage (pdf.js:1534)