Some problems in doing PROABC2

when i ues PROABC2, i have submitted the fasta sequence ,but it shows:
No sequence present in heavy.fasta file. Please check your input file

is there any software that can be used to predict epitopes?

You need to provide both the light and heavy chain sequences

Check our tutorial, e.g.:

Sir,i have submitted the light and heavy chain sequences,just like this:

light _chain_sequence

Try with the tutorial files. If they work you will know something is off with your sequence…
Check the format.

i get it , thank you sir!!