Error in save(list = names(.GlobalEnv), file = outfile, version = version, : error writing to connection

Why sometimes I can save my R data in the server but sometimes I cannot?

Please see the error message as below. Note that the first time I saved the RData and it went successfully. And the second time immediately after the first time, I got error message notifying " error writing to connection". I wonder what would be possible the issue and how to solve this?

Thanks

I am using RStudio-1.3.1073_R-4.0.2_CUDA-10.1_cuDNN-7.6.5_ubuntu-18.04-LTS-64bit for

save.image("~/JA_integrated.Rdata.RData") Warning messages: 1: ggrepel: 24 unlabeled data points (too many overlaps). Consider increasing max.overlaps 2: ggrepel: 24 unlabeled data points (too many overlaps). Consider increasing max.overlaps 3: ggrepel: 24 unlabeled data points (too many overlaps). Consider increasing max.overlaps

save.image("~/JA_integrated_plot.RData") Error in save(list = names(.GlobalEnv), file = outfile, version = version, : error writing to connection