There is a problem analyzing bmp files, how should I solve it?

[xileshi]

[?] 2 bytes of extra data after image end (IEND), offset = 0x269b0e
extradata:0 .. ["\x00" repeated 2 times]
imagedata .. file: OpenPGP Public Key
b1,lsb,bY .. /var/lib/gems/3.1.0/gems/iostruct-0.1.2/lib/iostruct.rb:136:in block in inspect': undefined method type' for nil:NilClass (NoMethodError)

      when f.type == Integer
            ^^^^^
    from /var/lib/gems/3.1.0/gems/iostruct-0.1.2/lib/iostruct.rb:133:in `each'
    from /var/lib/gems/3.1.0/gems/iostruct-0.1.2/lib/iostruct.rb:133:in `map'
    from /var/lib/gems/3.1.0/gems/iostruct-0.1.2/lib/iostruct.rb:133:in `inspect'
    from /var/lib/gems/3.1.0/gems/zsteg-0.2.13/lib/zsteg/checker/wbstego.rb:41:in `to_s'
    from /var/lib/gems/3.1.0/gems/zsteg-0.2.13/lib/zsteg/checker.rb:291:in `puts'
    from /var/lib/gems/3.1.0/gems/zsteg-0.2.13/lib/zsteg/checker.rb:291:in `puts'
    from /var/lib/gems/3.1.0/gems/zsteg-0.2.13/lib/zsteg/checker.rb:291:in `show_result'
    from /var/lib/gems/3.1.0/gems/zsteg-0.2.13/lib/zsteg/checker.rb:326:in `process_result'
    from /var/lib/gems/3.1.0/gems/zsteg-0.2.13/lib/zsteg/checker.rb:271:in `check_channels'
    from /var/lib/gems/3.1.0/gems/zsteg-0.2.13/lib/zsteg/checker.rb:191:in `check_channels'
    from /var/lib/gems/3.1.0/gems/zsteg-0.2.13/lib/zsteg/checker.rb:116:in `block (3 levels) in check'
    from /var/lib/gems/3.1.0/gems/zsteg-0.2.13/lib/zsteg/checker.rb:99:in `each'
    from /var/lib/gems/3.1.0/gems/zsteg-0.2.13/lib/zsteg/checker.rb:99:in `block (2 levels) in check'
    from /var/lib/gems/3.1.0/gems/zsteg-0.2.13/lib/zsteg/checker.rb:98:in `each'
    from /var/lib/gems/3.1.0/gems/zsteg-0.2.13/lib/zsteg/checker.rb:98:in `block in check'
    from /var/lib/gems/3.1.0/gems/zsteg-0.2.13/lib/zsteg/checker.rb:97:in `each'
    from /var/lib/gems/3.1.0/gems/zsteg-0.2.13/lib/zsteg/checker.rb:97:in `check'
    from /var/lib/gems/3.1.0/gems/zsteg-0.2.13/lib/zsteg/cli/cli.rb:258:in `check'
    from /var/lib/gems/3.1.0/gems/zsteg-0.2.13/lib/zsteg/cli/cli.rb:172:in `block (2 levels) in run'
    from /var/lib/gems/3.1.0/gems/zsteg-0.2.13/lib/zsteg/cli/cli.rb:168:in `each'
    from /var/lib/gems/3.1.0/gems/zsteg-0.2.13/lib/zsteg/cli/cli.rb:168:in `block in run'
    from /var/lib/gems/3.1.0/gems/zsteg-0.2.13/lib/zsteg/cli/cli.rb:161:in `each'
    from /var/lib/gems/3.1.0/gems/zsteg-0.2.13/lib/zsteg/cli/cli.rb:161:in `each_with_index'
    from /var/lib/gems/3.1.0/gems/zsteg-0.2.13/lib/zsteg/cli/cli.rb:161:in `run'
    from /var/lib/gems/3.1.0/gems/zsteg-0.2.13/lib/zsteg.rb:26:in `run'
    from /var/lib/gems/3.1.0/gems/zsteg-0.2.13/bin/zsteg:8:in `<top (required)>'
    from /usr/local/bin/zsteg:25:in `load'
    from /usr/local/bin/zsteg:25:in `<main>'

[dk19930125]

me too。Do you solve ？

[Nahuel-Nina-07]

I have the same problem when parsing .png files

[zch050217]

b1,bgr,lsb,xy .. /var/lib/gems/3.0.0/gems/iostruct-0.1.2/lib/iostruct.rb:136:in block in inspect': undefined method type' for nil:NilClass (NoMethodError)
from /var/lib/gems/3.0.0/gems/iostruct-0.1.2/lib/iostruct.rb:133:in each' from /var/lib/gems/3.0.0/gems/iostruct-0.1.2/lib/iostruct.rb:133:in map'
from /var/lib/gems/3.0.0/gems/iostruct-0.1.2/lib/iostruct.rb:133:in inspect' from /var/lib/gems/3.0.0/gems/zsteg-0.2.13/lib/zsteg/checker/wbstego.rb:41:in to_s'
from /var/lib/gems/3.0.0/gems/zsteg-0.2.13/lib/zsteg/checker.rb:291:in puts' from /var/lib/gems/3.0.0/gems/zsteg-0.2.13/lib/zsteg/checker.rb:291:in puts'
from /var/lib/gems/3.0.0/gems/zsteg-0.2.13/lib/zsteg/checker.rb:291:in show_result' from /var/lib/gems/3.0.0/gems/zsteg-0.2.13/lib/zsteg/checker.rb:326:in process_result'
from /var/lib/gems/3.0.0/gems/zsteg-0.2.13/lib/zsteg/checker.rb:271:in check_channels' from /var/lib/gems/3.0.0/gems/zsteg-0.2.13/lib/zsteg/checker.rb:191:in check_channels'
from /var/lib/gems/3.0.0/gems/zsteg-0.2.13/lib/zsteg/checker.rb:118:in block (4 levels) in check' from /var/lib/gems/3.0.0/gems/zsteg-0.2.13/lib/zsteg/checker.rb:118:in each'
from /var/lib/gems/3.0.0/gems/zsteg-0.2.13/lib/zsteg/checker.rb:118:in block (3 levels) in check' from /var/lib/gems/3.0.0/gems/zsteg-0.2.13/lib/zsteg/checker.rb:99:in each'
from /var/lib/gems/3.0.0/gems/zsteg-0.2.13/lib/zsteg/checker.rb:99:in block (2 levels) in check' from /var/lib/gems/3.0.0/gems/zsteg-0.2.13/lib/zsteg/checker.rb:98:in each'
from /var/lib/gems/3.0.0/gems/zsteg-0.2.13/lib/zsteg/checker.rb:98:in block in check' from /var/lib/gems/3.0.0/gems/zsteg-0.2.13/lib/zsteg/checker.rb:97:in each'
from /var/lib/gems/3.0.0/gems/zsteg-0.2.13/lib/zsteg/checker.rb:97:in check' from /var/lib/gems/3.0.0/gems/zsteg-0.2.13/lib/zsteg/cli/cli.rb:258:in check'
from /var/lib/gems/3.0.0/gems/zsteg-0.2.13/lib/zsteg/cli/cli.rb:172:in block (2 levels) in run' from /var/lib/gems/3.0.0/gems/zsteg-0.2.13/lib/zsteg/cli/cli.rb:168:in each'
from /var/lib/gems/3.0.0/gems/zsteg-0.2.13/lib/zsteg/cli/cli.rb:168:in block in run' from /var/lib/gems/3.0.0/gems/zsteg-0.2.13/lib/zsteg/cli/cli.rb:161:in each'
from /var/lib/gems/3.0.0/gems/zsteg-0.2.13/lib/zsteg/cli/cli.rb:161:in each_with_index' from /var/lib/gems/3.0.0/gems/zsteg-0.2.13/lib/zsteg/cli/cli.rb:161:in run'
from /var/lib/gems/3.0.0/gems/zsteg-0.2.13/lib/zsteg.rb:26:in run' from /var/lib/gems/3.0.0/gems/zsteg-0.2.13/bin/zsteg:8:in <top (required)>'
from /usr/local/bin/zsteg:25:in load' from /usr/local/bin/zsteg:25:in

'

me too,how can we solve it