Error: not enough values to unpack (expected 3, got 2)

[YrgkenKoutsi]

Hello, i'm getting the error below when running bloodvessel.py, any solution behind this?

Traceback (most recent call last): File "bloodvessels.py", line 62, in <module> bloodvessel = extract_bv(fundus) File "bloodvessels.py", line 25, in extract_bv im2, contours, hierarchy = cv2.findContours(f6.copy(),cv2.RETR_LIST,cv2.CHAIN_APPROX_SIMPLE) ValueError: not enough values to unpack (expected 3, got 2)

[NerijaK]

The line should look smth like this (2 arguments, not 3):
contours, hierarchy = cv2.findContours(f6.copy(),cv2.RETR_LIST,cv2.CHAIN_APPROX_SIMPLE)