If you set up the SAS UE virtual machine correctly, the name of the shared folder is /folders/myfolder (no trailing s) from within the VM.
Also your path in the error does not match the path in shown code.
With errors it is best to copy the submitted code and the error message from the log and then paste into a code box here using the forum's {I} icon. The message windows will sometimes reformat the text moving some of the indicators SAS places for some error messages to a different location. Copying both from log removes questions about whether "code" shown was what was actually submitted.
Learn how use the CAT functions in SAS to join values from multiple variables into a single value.
Find more tutorials on the SAS Users YouTube channel.
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