Error in yaml.load

Hi, there, I got a problem.

sessionInfo()
R version 3.4.1 (2017-06-30)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Ubuntu 16.04.3 LTS

Matrix products: default
BLAS: /usr/lib/libblas/libblas.so.3.6.0
LAPACK: /usr/lib/lapack/liblapack.so.3.6.0

locale:
[1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C LC_TIME=en_US.UTF-8
[4] LC_COLLATE=en_US.UTF-8 LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8
[7] LC_PAPER=en_US.UTF-8 LC_NAME=C LC_ADDRESS=C
[10] LC_TELEPHONE=C LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C

attached base packages:
[1] stats graphics grDevices utils datasets methods base

loaded via a namespace (and not attached):
[1] compiler_3.4.1 tools_3.4.1 yaml_2.1.14

Every time I open my Rstudio, The following error messages shows up:

Error in yaml.load(paste(readLines(input, encoding = "UTF-8"), collapse = "\n"), :
Scanner error: while scanning a block scalar at line 2, column 14did not find expected comment or line break at line 2, column 16

Can you tell me how to solve this error?

Start at the reported yaml.load call and reproduce the error using the supplied R 3.4.1, Ubuntu, and yaml 2.1.14 session details. The report names no repository file or test; done would be a confirmed cause and a regression test or documented fix for the failing input.