Optking assign Fe to S in Writing optimization data to binary file step

I’m using psi4 1.3a1.dev4 Git: Rev {master} 6de9c81.
And This is my input file.

----- Input File -------
memory 1500 mb

basis mybas {
assign 6-31+G**
assign Fe lanl2dz
}

set basis mybas
set reference uhf
set print_trajectory_xyz_file True

molecule FeF4{
0 5
Fe -0.74628 0.50044 0.00000
F -0.70302 2.02351 -0.00000
F 0.43456 -0.71111 1.39927
F -2.27462 -0.81968 0.34954
F -0.69905 -0.62140 -1.39568
}
optimize(‘m06-L’,molecule=FeF4)

— InputFile end ----

And This is a part of my output File.

------Part of my output File -------

    Writing optimization data to binary file.
    Structure for next step:
    Cartesian Geometry (in Angstrom)
        S     0.0000173592  -0.0002723159   0.0004517098
        F     0.4152969118   1.6560937982  -0.1246442231
        F     0.9208699235  -0.3407263986   1.4053833036
        F    -1.3574562508  -0.9682350431   0.3984537560
        F     0.0219741472  -0.3467984272  -1.6791040110
                    --------------------------
                     OPTKING Finished Execution
                    --------------------------

Structure for next step:
Molecular point group: c1
Full point group: C1

Geometry (in Angstrom), charge = 0, multiplicity = 5:

FE          -0.000088605718    -0.000204947226     0.000247403021
F            0.415190946903     1.656161166817    -0.124848529969
F            0.920763958634    -0.340659029925     1.405178996820
F           -1.357562215638    -0.968167674443     0.398249449131
F            0.021868182304    -0.346731058567    -1.679308317855

---- Part of my outputFile end ----

Does this error affect optimizing geometry?
Thank you.

I finally know why this happen.
This bug(?) occurs when I use ECP correction basis like lanl2dz.

Mn2-lanl2dz.dat (186.6 KB)
Mn2-dzvp.dat (226.1 KB)

Thank you.

File a bug on github, if you would, please.