NEXTCHECK_DELAY_ON_FAIL  doesn't work when json file is missing
Precondition:

1. Change const and URL

   	private const NEXTCHECK_DELAY = 120; // 2min
   	private const NEXTCHECK_DELAY_ON_FAIL = 240; // 4min
   	private const MAX_NO_DATA_PERIOD = 600; // 10min
   

2. Make sure that request runs each ~2min

Steps to reproduce:

1. Rename the json file to make URL invalid - 404
2. Check network tab in DevTool

Result: the request continues to run every 2 minutes

Expected result: after checking after 2 minutes and receiving that the file does not exist, the next check should be4min - NEXTCHECK_DELAY_ON_FAIL