dft calculation with fractional nuclear charge failed


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I tried to do a dft calculation with fractional nuclear charge, but it complains "Error Message from Task 0:: Numerical result out of range". Thank you very much help me solving this problem!!

The input file is:

start h2o

title "Water in 6-31g basis set"

geometry units au
O 0.00000000 0.00000000 0.00000000
Bq_H 0.00000000 1.43042809 -1.10715266 charge 0.1
H 0.00000000 -1.43042809 -1.10715266
end

charge -0.9

basis
Bq_H library H 6-31g
H library 6-31g
O library 6-31g
end

dft
xc pbe0
end

task dft