Error: LaTeX failed to compile problemset1.tex, In system2(...) 'CreateProcess' failed to run

[johnv1234]

I have been trying to knit to pdf using MiKTeX, but encounter the following error:

Error: LaTeX failed to compile problemset1.tex. See https://yihui.org/tinytex/r/#debugging for debugging tips.
In addition: Warning message:
In system2(..., stdout = if (use_file_stdout()) f1 else FALSE, stderr = f2) :
'CreateProcess' failed to run 'C:\Users\XXXX XXXX\AppData\Local\Programs\MiKTeX\miktex\bin\x64\pdflatex.exe -halt-on-error -interaction=batchmode "problemset1.tex"'
Execution halted

I am not sure what the issue is, and any help would be appreciated.