Can someone explain why the end of the file is unexpected on line 49? (Line 49 is one line after the last line)

#!/bin/bash 



timeend=$(date -u +%H%M)

timestart=$(date --date "$timeend 30 minutes ago" -u +%H%M)

firsttime=0



while true

do

    if [[ $firsttime -eq 0 ]]; then

    time=$timestart

    increment=0

    fi

    if [[ $firsttime -ne true ]]; then

    increment=$(( $increment + 2 ))

    time=$(( $timestart + $increment ))

    fi

    if [[ $time -ge $timeend ]]; then

    break

    fi 



    gpnids << EOF

    RADFIL   = NEXRIII|CLT|TR0

    RADTIM   = "$time"

    TITLE    = 1/-2

    PANEL    = 0

    DEVICE   = gif|radar"$increment".gif|1280;1024|C

    CLEAR    = Y

    TEXT     = 1/2/2/hw

    COLORS   = 7

    WIND     =  

    LINE     =  

    CLRBAR   =  

    IMCBAR   = 5/v/LL/.005;.6/.4;.01

    GAREA    = dset

    MAP      = 24 + 23 + 1/1/2 + 14 + 15/1/2

    LATLON   = 0

    OUTPUT   = t



    $mapfil = lorvus.usg + hicnus.nws + hipona.nws + louhus.nws + loisus.nws

    run



    exit

    EOF

    firsttime=1



    gpend



 done