Code:
[00:00:56] => Attempting to fetch https://codeload.github.com/opencv/opencv_3rdparty/tar.gz/a56b6ac6f030c312b2dce17430eef13aed9af274?dummy=/opencv-opencv_3rdparty-a56b6ac6f030c312b2dce17430eef13aed9af274_GH0.tar.gz
[00:00:56] fetch: https://codeload.github.com/opencv/opencv_3rdparty/tar.gz/a56b6ac6f030c312b2dce17430eef13aed9af274?dummy=/opencv-opencv_3rdparty-a56b6ac6f030c312b2dce17430eef13aed9af274_GH0.tar.gz: size unknown
[00:00:56] fetch: https://codeload.github.com/opencv/opencv_3rdparty/tar.gz/a56b6ac6f030c312b2dce17430eef13aed9af274?dummy=/opencv-opencv_3rdparty-a56b6ac6f030c312b2dce17430eef13aed9af274_GH0.tar.gz: size of remote file is not known
[00:00:56] opencv-opencv_3rdparty-a56b6ac6f030c312b2dce17430eef13aed9af274 129 MB 5023 kBps 26s
[00:01:22] => 998406d20e93aa36b26fd56506f3ea8a82b43c24.patch doesn't seem to exist in /portdistfiles/.
[00:01:22] => Attempting to fetch https://github.com/opencv/opencv/commit/998406d20e93aa36b26fd56506f3ea8a82b43c24.patch
[00:01:22] fetch: https://github.com/opencv/opencv/commit/998406d20e93aa36b26fd56506f3ea8a82b43c24.patch: size mismatch: expected 1074, actual 1072
[00:01:22] => Attempting to fetch http://distcache.FreeBSD.org/ports-distfiles/998406d20e93aa36b26fd56506f3ea8a82b43c24.patch
[00:01:23] fetch: http://distcache.FreeBSD.org/ports-distfiles/998406d20e93aa36b26fd56506f3ea8a82b43c24.patch: Not Found
[00:01:23] => Couldn't fetch it - please try to retrieve this
[00:01:23] => port manually into /portdistfiles/ and try again.
[00:01:23] *** Error code 1
[00:01:23]
[00:01:23] Stop.
[00:01:23] make: stopped in /usr/ports/graphics/opencv
[00:01:23] =>> Cleaning up wrkdir
[00:01:24] ===> Cleaning for opencv-4.5.3_4
[00:01:24] build of graphics/opencv | opencv-4.5.3_4 ended at Sun Nov 21 16:39:38 CET 2021
[00:01:24] build time: 00:01:20
[00:01:24] !!! build failure encountered !!!