Wont open, please help

[JavaScript Error: "Cannot access contents of url "chrome-search://most-visited/single.html?title=Most%20visited&removeTooltip=Don%27t%20show%20on%20this%20page&enableMD=1&enableCustomLinks=1&addLink=Add%20shortcut&addLinkTooltip=Add%20shortcut&editLinkTooltip=Edit%20shortcut". Extension manifest must request permission to access this host."]

This is what I'm getting, It was working perfectly fine and then suddenly disappeared and won't open when I click Zotero on my desktop. I've restarted by computer and didn't change anything.
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