No valid procedure loader could be found

[nwtn]

Hi,

I'm having a lot of trouble loading a custom procedure. No matter what I try, I get the an error that says Fatal error: Uncaught exception 'InvalidArgumentException' with message 'No valid procedure loader could be found to load the 'procedure_svg2png' procedure template.'. The full output is below.

This is happening even if I follow the example at http://jonnnnyw.github.io/php-phantomjs/advanced.html exactly:

test.php:

<?php
require_once __DIR__ . '/vendor/autoload.php';
use JonnyW\PhantomJs\Client;
use JonnyW\PhantomJs\DependencyInjection\ServiceContainer;
$location = 'src';
$serviceContainer = ServiceContainer::getInstance();
$procedureLoader = $serviceContainer->get('procedure_loader_factory')->createProcedureLoader($location);
$client = Client::getInstance();
$client->getProcedureLoader()->addLoader($procedureLoader);
$request = $client->getMessageFactory()->createRequest();
$request->setType('test');
$response = $client->getMessageFactory()->createResponse();
$client->send($request, $response);
?>

src/test.proc:

phantom.exit(0);
phantom.onError = function(msg, trace) {
    phantom.exit(1);
};

output:

dnewton@newtron ~/Sites/gh/php-respimg 👍  php test.php

Fatal error: Uncaught exception 'InvalidArgumentException' with message 'No valid procedure loader could be found to load the 'procedure_test' procedure template.' in /Users/dnewton/Sites/gh/php-respimg/vendor/twig/twig/lib/Twig/Template.php on line 328

InvalidArgumentException: No valid procedure loader could be found to load the 'procedure_test' procedure template. in /Users/dnewton/Sites/gh/php-respimg/vendor/jonnyw/php-phantomjs/src/JonnyW/PhantomJs/Procedure/ChainProcedureLoader.php on line 99

Call Stack:
    0.0004     232664   1. {main}() /Users/dnewton/Sites/gh/php-respimg/test.php:0
    0.0524    3232976   2. JonnyW\PhantomJs\Client->send() /Users/dnewton/Sites/gh/php-respimg/test.php:22
    0.0530    3267256   3. JonnyW\PhantomJs\Procedure\ProcedureCompiler->compile() /Users/dnewton/Sites/gh/php-respimg/vendor/jonnyw/php-phantomjs/src/JonnyW/PhantomJs/Client.php:160
    0.0531    3268280   4. JonnyW\PhantomJs\Template\TemplateRenderer->render() /Users/dnewton/Sites/gh/php-respimg/vendor/jonnyw/php-phantomjs/src/JonnyW/PhantomJs/Procedure/ProcedureCompiler.php:100
    0.0531    3268328   5. Twig_Environment->render() /Users/dnewton/Sites/gh/php-respimg/vendor/jonnyw/php-phantomjs/src/JonnyW/PhantomJs/Template/TemplateRenderer.php:47
    0.0751    4063688   6. Twig_Template->render() /Users/dnewton/Sites/gh/php-respimg/vendor/twig/twig/lib/Twig/Environment.php:293
    0.0751    4080928   7. Twig_Template->display() /Users/dnewton/Sites/gh/php-respimg/vendor/twig/twig/lib/Twig/Template.php:298
    0.0752    4081848   8. Twig_Template->displayWithErrorHandling() /Users/dnewton/Sites/gh/php-respimg/vendor/twig/twig/lib/Twig/Template.php:287
    0.0752    4082056   9. __TwigTemplate_fc117057b6dcbf5ee855b38ef9dfffab555607edaa690c38c31a337dce0461f2->doDisplay() /Users/dnewton/Sites/gh/php-respimg/vendor/twig/twig/lib/Twig/Template.php:313
    0.0775    4090944  10. Twig_Template->getAttribute() /Users/dnewton/Sites/gh/php-respimg/vendor/twig/twig/lib/Twig/Environment.php(332) : eval()'d code:227
    0.0775    4091768  11. call_user_func_array:{/Users/dnewton/Sites/gh/php-respimg/vendor/twig/twig/lib/Twig/Template.php:499}() /Users/dnewton/Sites/gh/php-respimg/vendor/twig/twig/lib/Twig/Template.php:499
    0.0776    4092104  12. JonnyW\PhantomJs\Procedure\ProcedureCompiler->load() /Users/dnewton/Sites/gh/php-respimg/vendor/twig/twig/lib/Twig/Template.php:499
    0.0776    4092152  13. JonnyW\PhantomJs\Procedure\ChainProcedureLoader->loadTemplate() /Users/dnewton/Sites/gh/php-respimg/vendor/jonnyw/php-phantomjs/src/JonnyW/PhantomJs/Procedure/ProcedureCompiler.php:126

Twig_Error_Runtime: An exception has been thrown during the rendering of a template ("No valid procedure loader could be found to load the 'procedure_test' procedure template.") in "
[% autoescape false %]
{% autoescape false %}

/**
 * Set up page and script parameters
 */
var page       = require('webpage').create(),
    system     = require('system'),
    response   = {},
    debug      = [],
    logs       = [],
    procedure  = {};

/**
 * Global variables
 */
[[ engine.load('global_variables') ]]

/**
 * Define width & height of capture
 */
[[ engine.load('page_clip_rect') ]]

/**
 * Define paper size.
 */
[[ engine.load('page_paper_size') ]]

/**
 * Define viewport size.
 */
[[ engine.load('page_viewport_size') ]]


/**
 * Define custom headers.
 */
[[ engine.load('page_custom_headers') ]]

/**
 * Page settings
 */
[[ engine.load('page_settings') ]]

/**
 * On resource timeout
 */
page.onResourceTimeout = function (error) {
    [[ engine.load('page_on_resource_timeout') ]]
};

/**
 * On resource received
 */
page.onResourceReceived = function (resource) {
    [[ engine.load('page_on_resource_received') ]]
};

/**
 * Handle page errors
 */
page.onError = function (msg, trace) {
    [[ engine.load('page_on_error') ]]
};

/**
 * Handle global errors
 */
phantom.onError = function(msg, trace) {
    [[ engine.load('phantom_on_error') ]]
};

/**
 * Open page
 */
page.open ('{{ input.getUrl() }}', '{{ input.getMethod() }}', '{{ input.getBody() }}', function (status) {
    [[ engine.load('page_open') ]]
});

/**
 * Execute procedure
 */
procedure.execute = function (status) {
    [[ engine.load( 'procedure_' ~ procedure_type ) ]]
};

{% endautoescape %}
[% endautoescape %]" at line 85. in /Users/dnewton/Sites/gh/php-respimg/vendor/twig/twig/lib/Twig/Template.php on line 328

Call Stack:
    0.0004     232664   1. {main}() /Users/dnewton/Sites/gh/php-respimg/test.php:0
    0.0524    3232976   2. JonnyW\PhantomJs\Client->send() /Users/dnewton/Sites/gh/php-respimg/test.php:22
    0.0530    3267256   3. JonnyW\PhantomJs\Procedure\ProcedureCompiler->compile() /Users/dnewton/Sites/gh/php-respimg/vendor/jonnyw/php-phantomjs/src/JonnyW/PhantomJs/Client.php:160
    0.0531    3268280   4. JonnyW\PhantomJs\Template\TemplateRenderer->render() /Users/dnewton/Sites/gh/php-respimg/vendor/jonnyw/php-phantomjs/src/JonnyW/PhantomJs/Procedure/ProcedureCompiler.php:100
    0.0531    3268328   5. Twig_Environment->render() /Users/dnewton/Sites/gh/php-respimg/vendor/jonnyw/php-phantomjs/src/JonnyW/PhantomJs/Template/TemplateRenderer.php:47
    0.0751    4063688   6. Twig_Template->render() /Users/dnewton/Sites/gh/php-respimg/vendor/twig/twig/lib/Twig/Environment.php:293

dnewton@newtron ~/Sites/gh/php-respimg

[jonnnnyw]

I would try making your location path absolute. By setting it to just 'src' it assumes it is relative to where the script is being executed which isn't reliable.