Loading HTML from the data directory with WKWebView results in an error

[WuLianpu]

Loading HTML from the data directory (cordova.file.cacheDirectory) with WKWebView results in an error. The error message is as follows: WebPageProxy::Ignoring request to load this main resource because it is outside the sandbox

Issue details can be found in the discussion: #1011

Does anyone know how to resolve this issue?

[Norman Breau]

Closing as duplicate