The link of the LCMS Processing tutorial https://dev.metaboanalyst.ca/resources/vignettes/LCMSMS_Raw_Spectral_Processing.html example malaria_raw is broken there:
download.file("https://rest.xialab.ca/api/download/metaboanalyst/malaria_r_example.zip",
destfile = "malaria_raw.zip",
method = "curl")
unzip("malaria_raw.zip", exdir = "upload")
However the original link from MetaboAnalyst data formats https://www.metaboanalyst.ca/docs/Format.xhtml still works correctly.
https://api2.xialab.ca/api/download/metaboanalyst/malaria_raw.zip
Just commenting about it.