Sorry about this. Yes, I updated it recently and it turns out that some of the files within the extension package were corrupt. I’ve submitted a fix to the Chrome Web Store in version 0.9.21. Normally it takes a day or two for an update to be published but for some reason this time it required more detail from me and said that it would be subject to an “in depth review” so I fear it might take longer, but we’ll see.
In the meantime I did manage to publish the fixed version (0.9.21) to the Firefox Store in case any of you don’t mind using a different browser while this issue is being sorted out: Readlang Web Reader – Consigue esta extensión para 🦊 Firefox (es-ES)