update currency value

Warning: The primary exchange rate server (oanda) failed for U.S. Dollar (USD) - trying the secondary exchange rate server.
Error Error: The exchange rate for U.S. Dollar (USD) was not updated via xe. Is it a valid currency code?
Warning Warning: The primary exchange rate server (oanda) failed for Euro (EUR) - trying the secondary exchange rate server.
Error Error: The exchange rate for Euro (EUR) was not updated via xe. Is it a valid currency code?
Warning Warning: The primary exchange rate server (oanda) failed for Indian Rupee (INR) - trying the secondary exchange rate server.
Error Error: The exchange rate for Indian Rupee (INR) was not updated via xe. Is it a valid currency code?

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