I installed Rstudio in our lab's server, and run as a non-root user. I usually installed R packages in a directory created by my self and I have the privilege to read and write. However, I found packages installed previously in that directory can no longer be used, and there are error messages which say "* No title available *" (Figure 1).
I have no idea about what to do now and I don't want to install so many packages again.
> sessionInfo() R version 3.5.0 (2018-04-23) Platform: x86_64-redhat-linux-gnu (64-bit) Running under: CentOS Linux 7 (Core) Matrix products: default BLAS/LAPACK: /usr/lib64/R/lib/libRblas.so locale:  LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C LC_TIME=en_US.UTF-8  LC_COLLATE=en_US.UTF-8 LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8  LC_PAPER=en_US.UTF-8 LC_NAME=C LC_ADDRESS=C  LC_TELEPHONE=C LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C attached base packages:  stats graphics grDevices utils datasets methods base other attached packages:  Matrix_1.2-14 cowplot_0.9.3 ggplot2_3.0.0 loaded via a namespace (and not attached):  Rcpp_0.12.17 lattice_0.20-35 withr_2.1.2 grid_3.5.0 plyr_1.8.4  gtable_0.2.0 scales_0.5.0 pillar_1.2.3 rlang_0.2.1 lazyeval_0.2.1  RColorBrewer_1.1-2 tools_3.5.0 munsell_0.5.0 yaml_2.2.0 compiler_3.5.0  colorspace_1.3-2 BiocManager_1.30.4 knitr_1.20 tibble_1.4.2
Thanks in advance!