error running convert_emiss.exe

[mariela_i]

Dear wrf users,
I am trying the exercise 2 of WRF-CHEM tutorials and I have an error running convert_emiss.exe :

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I am reading global volcanic emissions, dims: = 1 99 1 99
OPENED FILE: volc_d01
At line 509 of file convert_emiss.f90 (unit = 92, file = 'volc_d01')
Fortran runtime error: End of file

Error termination. Backtrace:
#0 0x7f9600ab0d11 in ???
#1 0x7f9600ab1859 in ???
#2 0x7f9600ab253f in ???
#3 0x7f9600cf5c4b in ???
#4 0x7f9600cf66ef in ???
#5 0x7f9600cf67d4 in ???
#6 0x7f9600cf8c3a in ???
#7 0x7f9600cf9514 in ???
#8 0x555daac85a3b in ???
#9 0x555daac5f422 in ???
#10 0x7f9600707082 in __libc_start_main
at ../csu/libc-start.c:308
#11 0x555daac5f45d in ???
#12 0xffffffffffffffff in ???

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I would appreciate any help.
Thanks in advance.