Got {aborted,{no_exists,pdpcontext}} with Mnesia

[Papa Tana]

Hi All,

I want to use Mnesia for my application, but it returns "no_exists"

According to the documentation:

==> no_exists: Tried to perform operation on non-existing (non-alive) item.

$ dialyzer first.erl
  Checking whether the PLT c:/Users/Lova/.dialyzer_plt is up-to-date... yes
  Proceeding with analysis... done in 0m0.23s
done (passed successfully)


$ erl -sname myggsn@REDACTED
Eshell V11.0  (abort with ^G)

(myggsn@REDACTED)1> c(first).
{ok,first}

(myggsn@REDACTED)2> node().
myggsn@REDACTED

(myggsn@REDACTED)3> mnesia:start().
ok

(myggsn@REDACTED)4> first:database_initialize().
=INFO REPORT==== 16-Jul-2020::11:12:13.951000 ===
    application: mnesia
    exited: stopped
    type: temporary

stopped

(myggsn@REDACTED)5> first:start().
{aborted,{no_exists,pdpcontext}}

Where am I wrong please?

I send enclosed my first.erl

Best Regards,
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