Chapter 15 Troubleshooting R error messages

Once R is running, it tells you something is not working correctly 4 ways

  1. By acting weird but not telling you something is wrong
  2. Warning messages
  3. Error messages
  4. Crashing

Note that there is a BIG difference between a “Warning” (usually can be ignored) and an “Error”, which is a problem that needs to be addressed. Both occur in angry looking red text, but their consequences are VERY different.

15.1 Acting weird but not telling you something is wrong

Fairly common. With practice you’ll figure this out. Some of the info below will help you with this. ( Specific information to be added later)

15.2 Warning messages

Again, warnings are very different than errors. R loves to give you unnecessary warnings in what appears to be angry red-text. This is usually nothing to worry about. See here for more info: https://bit.ly/Rwarningsvid

15.3 Error messages

These can be problematic, though often R won’t crash. Some of the info below will help you with this. ( Specific information to be added later)

15.4 Crashes

R and RStudio are very stable. Often updating R and RStudio will fix this, or some other major underlying package. Some of the info below will help you with this. ( Specific information to be added later)

See this thread for ideas for troubleshooting R messages and other R shenanigans. https://twitter.com/lobrowR/status/1179822382782935040?s=20

For advanced situations, you may want to see if code works in an older version of R Changing version of R run by RStudio https://support.rstudio.com/hc/en-us/articles/200486138-Changing-R-versions-for-RStudio-desktop

R switch for Mac https://mac.r-project.org/

Issues with C/Python libraries “Symbol not found“ https://github.com/rstudio/tensorflow/issues/69