It's not possible to upload a file with the name specified, likely because the filename incorrectly contains a double-extension, or what resembles two filename extensions, or there is unnecessary punctuation at the end of the filename. Please go back and remove the double extension.
Examples of corrections:
"File:Foobar.jpg.jpg" → "File:Foobar.jpg"
"File:Foobar.jpeg.svg" → "File:Foobar.svg"
"File:Foobar.jpeg.svg" → "File:Foobar.svg"
"File:Foobar,.gif" → "File:Foobar.gif"
"File:Foobar,pdf .tiff" → "File:Foobar.tiff"