Should catch the exception in function save of class Capture

[xuanskyer]

Should catch the exception in function save of class Capture

public function save($imageLocation, $deleteFileIfExists = true)
    {
        $this->imageLocation = $this->output->getLocation() . $imageLocation;

        if (!pathinfo($this->imageLocation, PATHINFO_EXTENSION)) {
            $this->imageLocation .= '.' . $this->getImageType()->getFormat();
        }

        $data = array(
            'url'           => $this->url,
            'width'         => $this->width,
            'height'        => $this->height,
            'imageLocation' => LocalPath::sanitize($this->imageLocation),
        );

        if ($this->clipWidth && $this->clipHeight) {
            $data['clipOptions']['width'] = $this->clipWidth;
            $data['clipOptions']['height'] = $this->clipHeight;
            $data['clipOptions']['top'] = 0;
            $data['clipOptions']['left'] = 0;
        }

        if ($this->backgroundColor) {
            $data['backgroundColor'] = $this->backgroundColor;
        } elseif ($this->getImageType()->getFormat() == Types\Jpg::FORMAT) {
            // If there is no background color set, and it's a jpeg
            // we need to set a bg color, otherwise the background will be black
            $data['backgroundColor'] = '#FFFFFF';
        }

        if ($this->userAgentString) {
            $data['userAgent'] = $this->userAgentString;
        }

        if ($this->timeout) {
            $data['timeout'] = $this->timeout;
        }

        if ($this->includedJsScripts) {
            $data['includedJsScripts'] = $this->includedJsScripts;
        }

        if ($this->includedJsSnippets) {
            $data['includedJsSnippets'] = $this->includedJsSnippets;
        }

        if ($deleteFileIfExists && file_exists($this->imageLocation) && is_writable($this->imageLocation)) {
            unlink($this->imageLocation);
        }

        $jobName = md5(json_encode($data));
        $jobPath = $this->jobs->getLocation() . $jobName . '.js';

        if (!is_file($jobPath)) {
            // Now we write the code to a js file
            $resultString = $this->getTemplateResult('screen-capture', $data);
            file_put_contents($jobPath, $resultString);
        }

        $command = sprintf("%sphantomjs %s", $this->binPath, $jobPath);
        $result = exec(escapeshellcmd($command));

        return file_exists($this->imageLocation);
    }