MediaWiki API result

This is the HTML representation of the JSON format. HTML is good for debugging, but is unsuitable for application use. Specify the <var>format</var> parameter to change the output format. To see the non-HTML representation of the JSON format, set [http://riuraueditors.cat/bibliotecajjcardona/api.php?action=help&recursivesubmodules=1&format=json <kbd>format=json</kbd>]. See the [[mw:API|complete documentation]], or the [[Special:ApiHelp/main|API help]] for more information.

{
    "error": {
        "code": "internal_api_error_MWException",
        "info": "[aW_vLb5rPs7_3ImBf-_mfAAAAAY] Exception caught: MagicWordArray::parseMatch: parameter not found"
    }
}