SUBMISSION FAILED WITH: The container ran out of memory.

Hi to everyone I'm trying to submit my results to "Medical Segmentation Decathlon". I followed the guidelines to save the prediction. My submission failed with the error: The container ran out of memory.
Does anyone encounter a similar problem? For me is strange this error since I'm just submitting the predictions of the test set and nothing more. How is it possible that there is no memory left?
Thanks in advance for the answer!

The evaluation procedure ran out of memory. If you're submitting segmentations please check your datatype (e.g. don't use floats or long ints), otherwise, please contact the challenge administrators as they would need to fix this.

Thanks for your answer, I've checked the data type to be sure 100% is saved as uint8, I also removed the 11 predictions (ten from task 03 and one from task08) as it is suggested in the submission guidelines. I also contacted the administration but unfortunately, I didn't receive a reply yet. Anyways thanks again for your answer.
This is the mamory occupation of the saved predictions. Does anybody have similar dimension?
18M Task01BrainTumour
2.5M Task02Heart
28M Task03Liver
245K Task04Hippocampus
231K Task05Prostate
11M Task06Lung
17M Task07Pancreas
15M Task08HepaticVessel
2.2M Task09Spleen
7.5M Task10Colon

It is best to contact the organisers directly, there is an "Email Organisers" link on their challenge page.