[2020-12-12 18:37:57] Pool eu-01.miningrigrentals.com received new job. (job_id: 0x3bef404a660..., diff 0.250 / 1074 MH)
[2020-12-12 18:37:57] Pool eu-01.miningrigrentals.com share rejected. (GPU3) Error code: 23 - Low difficulty (a:3 r:1u) (356 ms) (diff 4.98 GH)

What is this error? i see this error every 2-3 hour and reject