JSON / Bitcoind API 500 internal error

aboboras has asked for the wisdom of the Perl Monks concerning the following question:

Edited:

I'm using the module Finance Bitcoin Api.

$btc = $data{"amount"};
$btc = substr($btc,0,32);
chomp($btc);
$btc = sprintf('%.8f', $btc);

$call = $api->call('sendfrom', $sender_account, $receiving_address,$bt
+c,6);
[download]

The api call above does not work, however if i substitute the variable $btc for hardcoded value it does work fine. I found the same issue in PHP and the problem was passing a string instead of a numerical. Any wisdom? I'm stuck on it.
Thanks.

Comment on JSON / Bitcoind API 500 internal error Download Code

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Re: JSON / Bitcoind API 500 internal error by marto (Cardinal) on Mar 04, 2014 at 18:16 UTC
Internal server errors occur server side, you should check the appriate server logs which should tell you why. The Finance::Bitcoin::API docs suggest chcking `error` for error messages which would be worth while.	[reply] [d/l]
Re^2: JSON / Bitcoind API 500 internal error by aboboras (Acolyte) on Mar 04, 2014 at 18:40 UTC
Do you know the proper way of cheking for errors? The way i'm doing $error = $call->{'error'}; is returning null. The Apache log does not have any related error.	[reply]
Re^3: JSON / Bitcoind API 500 internal error by runrig (Abbot) on Mar 04, 2014 at 19:03 UTC
Looking at the docs, it looks like the proper way would be to call `$api->error()` if `$api->call(...)` returns undef.	[reply] [d/l] [select]
Re^4: JSON / Bitcoind API 500 internal error by aboboras (Acolyte) on Mar 04, 2014 at 20:43 UTC
Re^5: JSON / Bitcoind API 500 internal error by marto (Cardinal) on Mar 04, 2014 at 20:56 UTC
Re^3: JSON / Bitcoind API 500 internal error by marto (Cardinal) on Mar 04, 2014 at 19:24 UTC
If the apache error log has nothing consider checking that your configuration is set to log errors correctly. The module documentation has example usage for the error method.	[reply]
Re^4: JSON / Bitcoind API 500 internal error by aboboras (Acolyte) on Mar 04, 2014 at 21:45 UTC
Re: JSON / Bitcoind API 500 internal error by tobyink (Canon) on Mar 05, 2014 at 09:40 UTC
I think the issue is likely that the JSON module which Finance::Bitcoin uses (via the JSON RPC module) is treating your `$btc` as a string instead of a number. Passing `$btc+0` may fix things. `use Moops; class Cow :rw { has name => (default => 'Ermintrude') }; say Cow->new->name`	[reply] [d/l] [select]