I am using pyetfdb-scraper to scrap info about ETFs. It worked last week, but suddenly, I am consistently getting 403 errors.

from pyetfdb_scraper.etf import ETF
test = ETF('VTI')

How can I check that the server-side is blocking me, versus something wrong with the code?

Note that I am not doing a massive scrapping – I’m looking up half a dozen with 5 sec. sleep in between.