Mfix compiling error

MFiX Installation
#1

Hi all,
not so sure if it is completelly related with the installation. I’ve installed mfix in a new cluster from root but when I try to compile (either serial or dmp) I get the error attached (sorry for the output parts in spanish but I think it can be understood anyway). The system has installed gfortran and mpif90

/export/apps/anaconda3/envs/mfix-19.2.2/share/mfix/src/model/machine_mod.f:74.20:

  character(len=:), allocatable :: hostname
                1

Error: Error sintáctico en la declaración CHARACTER en (1)
/export/apps/anaconda3/envs/mfix-19.2.2/share/mfix/src/model/machine_mod.f:100.23:

     character(len=:), allocatable :: f_string
                   1

Error: Error sintáctico en la declaración CHARACTER en (1)
/export/apps/anaconda3/envs/mfix-19.2.2/share/mfix/src/model/machine_mod.f:98.60:

  pure function c_to_f_string(c_string) result(f_string)
                                                        1

Error: El resultado de la función ‘f_string’ en (1) no es de tipo IMPLICIT
/export/apps/anaconda3/envs/mfix-19.2.2/share/mfix/src/model/machine_mod.f:107.28:

     allocate (character(len=n) :: f_string)
                        1

Error: Error sintáctico en la declaración ALLOCATE en (1)
/export/apps/anaconda3/envs/mfix-19.2.2/share/mfix/src/model/machine_mod.f:90.14:

  hostname = c_to_f_string(cstr_hostname)
          1

Error: El símbolo ‘hostname’ en (1) no tiene tipo IMPLICIT
make[2]: *** [model/CMakeFiles/mfixcore.dir/machine_mod.f.o] Error 1
make[1]: *** [model/CMakeFiles/mfixcore.dir/all] Error 2
make: *** [all] Error 2

                  BUILD UNSUCCESSFUL

==============================================================

#2

Check your compiler version:
gfortran --version
mpif90 --version

MFiX requires a Fortran 2003 compiler, such as GCC/GFortran 4.8 or later