There is a null dereference in the RespUtil class at the point of Polynomial section output. This is where it's attempting to produce the B062F15-16 coefficient lines.
B062F14 Number of Coefficients: 2
# Polynomial coefficients:
# i, coefficient, error
B062F15-16 null+8.00000E+04 +0.00000E+00
B062F15-16 null+1.50000E-02 +0.00000E+00
There is a null dereference in the RespUtil class at the point of Polynomial section output. This is where it's attempting to produce the B062F15-16 coefficient lines.
Repro:
Make the following request:
http://service.iris.edu/irisws/resp/1/query?net=AV&sta=N20K&loc=EP&cha=LDO&starttime=2020-04-26T00:00:00&endtime=2599-12-31T23:59:59
Expected:
Something like what the station service does...