react-scripts 3.3+ needs configuration changes #2
Description
updating to react-scripts 3.3x (e.g. react-scripts 3.4.1) needs a change in configuration,
because process.env.PUBLIC_URL is used differently, see here:
facebook/create-react-app#8490 (comment)
(see 3 comments further down as well)
Note that this osmd react example project was created with an older version of create-react-app.