DevTools failed to load SourceMap: Could not load content for chrome-extension://fheoggkfdfchfphceeifdbepaooicaho/sourceMap/chrome/iframe_handler.map: code example
Example: devtools failed to load sourcemap when debugging react native
Open Developer Tools,
go to "Settings" for Developer Tools,
then uncheck Enable JavaScript Sourcemaps under the "Sources" settings.
Restart Browser if needed