[erlang-questions] my first crash.dump

[Peter J Etheridge]

dear list,in learning Erlang i am trialling Intellij IDEA.
as a test, i entered from p.165 of joe's book, his module
fac1.although no errors were evident in what i had transcribed,when i
ran debugger i received my first;erl_crash.dump3,258 typos found.from
just 9 lines of joe's code?
any clues?best regards to all,peter
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