Inpgen2 crashes

For this inpfile inp_Sr4Al16O28 inpgen2 will crash saying:

redies@iff667 ~/calculations/benchmark                                                                                                                                                                                       [10:53:47]
(base) > $ ~/fleur/build.mpigfort/inpgen2/inpgen2 -f inp_Sr4Al16O28 -inc all -overwrite                                                                                                                                     [±master ●]
      Welcome to FLEUR - inpgen   (www.flapw.de)
      MaX-Release 4.0          (www.max-centre.eu)
At line 466 of file /Users/redies/fleur/inpgen2/make_spacegroup.f90
Fortran runtime error: Attempting to allocate already allocated variable 'sym'

Error termination. Backtrace:
#0  0x40b48e in __m_make_spacegroup_MOD_make_spacegroup
	at /Users/redies/fleur/inpgen2/make_spacegroup.f90:466
#1  0x4074b4 in __m_make_crystal_MOD_make_crystal
	at /Users/redies/fleur/inpgen2/make_crystal.f90:76
#2  0x404fb2 in inpgen
	at /Users/redies/fleur/inpgen2/inpgen.f90:120
#3  0x40379c in main
	at /Users/redies/fleur/inpgen2/inpgen.f90:17