cannot save workspace image upon the exit in R

In window 10, 64bit, I am using Rstudio Version 1.1.456 which is directly installed via Anaconda. If I choose to save the workspace image upon exit, an error message will show up like

Error in gzfile(file, "wb") : cannot open the connection
In addition: Warning message:
In gzfile(file, "wb") :
  cannot open compressed file 'C:/Users/yinco/OneDrive/??/.RDataTmp', probable reason 'Invalid argument'
Error: Error in gzfile(file, "wb") : cannot open the connection
In addition: Warning message:
In file.remove(outfile) :
  cannot remove file 'C:/Users/yinco/OneDrive/??/.RDataTmp', reason 'Invalid argument'
Error in gzfile(file, "wb") : cannot open the connection
In addition: Warning message:
In gzfile(file, "wb") :
  cannot open compressed file 'C:/Users/yinco/OneDrive/??/.RDataTmp', probable reason 'Invalid argument'
Error: Error in gzfile(file, "wb") : cannot open the connection
In addition: Warning message:
In file.remove(outfile) :
  cannot remove file 'C:/Users/yinco/OneDrive/??/.RDataTmp', reason 'Invalid argument'
Error in gzfile(file, "wb") : cannot open the connection
In addition: Warning message:
In gzfile(file, "wb") :
  cannot open compressed file 'C:/Users/yinco/OneDrive/??/.RDataTmp', probable reason 'Invalid argument'
Error: Error in gzfile(file, "wb") : cannot open the connection
In addition: Warning message:
In file.remove(outfile) :
  cannot remove file 'C:/Users/yinco/OneDrive/??/.RDataTmp', reason 'Invalid argument'

I try to unlink the one Drive and cannot find its existence.

many thanks if someone can resolve my problems