Error when some_filename.tif.aux.xml is present

[wiesehahn]

I encountered error

ERROR 4: `filepath.tif.aux.xml' not recognized as a supported file format.
Error in if (any(nchar(x) < 1)) stop(sprintf(mess, "Not a valid character vector:")) : 
  missing value where TRUE/FALSE needed

when I tried to read

ras <- ezwarp(
  x = "filepath.tif", 
  y = src, 
  res = 1000)

Strangely ezwarp tried to read the filepath.tif.aux.xml file which was automatically produced when I read the data in QGIS. When I deleted the file it was no problem for ezwarp to rad the .tif file.