Error Syntaxerror: Unexpected Token < In Json At Position 0

ERROR: core.es5.js?0445:1084 ERROR SyntaxError: Unexpected token < in JSON at position 0 at JSON.parse ( SITUATION: What I am trying to achieve is to pre-

Solution 1:

This error happens when server responds with HTML instead of JSON, particularly when a route is not found and the response is 404 page.

It's unlikely that API has the only route which is mounted at root and available as http://localhost:3000/'+userID, just because it's not possible for the server to do anything else in this case.

If the route is mounted to some path, like

app.use('/user', userRoutes);

then the requests should be performed to this path as well

returnthis.http.get('http://localhost:3000/user/'+userID)