[TYPO3-Solr] Solr and Gridelement

[Cyril Wolfangel]

Hello Solr enthousiasts :)

I'm trying to index content from [boostrap_grids], an extension based on 
gridelements.

Solr fail each time and refuse to index pages containing [gridelement] 
content.

1: exception 'TYPO3\CMS\Core\Error\Exception' with message 'PHP Warning: 
file_get_contents(http://mydomain.com/index.php?id=3102&L=0): failed to 
open stream: HTTP request failed! HTTP/1.1 500 Internal Server Error
  in 
/var/www/2015_TYPO3_62/typo3conf/ext/solr/Classes/IndexQueue/PageIndexerRequest.php 
line 144' in 
/var/www/typo3_src-6.2.10rc1/typo3/sysext/core/Classes/Error/ErrorHandler.php:101
Stack trace:
#0 [internal function]: 
TYPO3\CMS\Core\Error\ErrorHandler->handleError(2, 'file_get_conten...', 
'/var/www/2015_T...', 144, Array)
#1 
/var/www/2015_TYPO3_62/typo3conf/ext/solr/Classes/IndexQueue/PageIndexerRequest.php(144): 
file_get_contents('http://sufp.uni...', false, Resource id #647)
#2 
/var/www/2015_TYPO3_62/typo3conf/ext/solr/Classes/IndexQueue/PageIndexer.php(89): 
Tx_Solr_IndexQueue_PageIndexerRequest->send('http://sufp.uni...')
#3 
/var/www/2015_TYPO3_62/typo3conf/ext/solr/Classes/IndexQueue/PageIndexer.php(64): 
Tx_Solr_IndexQueue_PageIndexer->indexPage(Object(Tx_Solr_IndexQueue_Item), 
0, '0')
#4 
/var/www/2015_TYPO3_62/typo3conf/ext/solr/Scheduler/IndexQueueWorkerTask.php(115): 
Tx_Solr_IndexQueue_PageIndexer->index(Object(Tx_Solr_IndexQueue_Item))
#5 
/var/www/2015_TYPO3_62/typo3conf/ext/solr/Scheduler/IndexQueueWorkerTask.php(78): 
Tx_Solr_Scheduler_IndexQueueWorkerTask->indexItem(Object(Tx_Solr_IndexQueue_Item))
#6 
/var/www/2015_TYPO3_62/typo3conf/ext/solr/Scheduler/IndexQueueWorkerTask.php(57): 
Tx_Solr_Scheduler_IndexQueueWorkerTask->indexItems()
#7 
/var/www/typo3_src-6.2.10rc1/typo3/sysext/scheduler/Classes/Scheduler.php(148): 
Tx_Solr_Scheduler_IndexQueueWorkerTask->execute()
#8 
/var/www/typo3_src-6.2.10rc1/typo3/sysext/scheduler/cli/scheduler_cli_dispatch.php(58): 
TYPO3\CMS\Scheduler\Scheduler->executeTask(Object(Tx_Solr_Scheduler_IndexQueueWorkerTask))
#9 /var/www/typo3_src-6.2.10rc1/typo3/cli_dispatch.phpsh(53): 
include('/var/www/typo3_...')
#10 {main}

Any feedbacks ? Does someone have an idea ?