Undefined symbol, angle beta, card X

I kept getting this pesky error, with no apparent solution found online. It happened when copy-pasting coordinates from files in different platforms. I edited the input file many many times in Linux but only when I got to look at it in a Windows Notepad was that I saw the following lines:

6 0.000000000 0.000000000 Â Â Â Â -0.030561000

Where the “” symbols had to be removed by deleting every apparently empty space between coordinates.

So, this error:

Undefined symbol, angle beta, card  X

where X is the atom number line where the error is found, is simply solved by deleting the hidden symbols from the input. You may need to change editors or code.