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 [https://mttalks.ufal.ms.mff.cuni.cz/api.php?action=logout&token=123ABC&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_DBTransactionStateError",
        "info": "[7dc1a924aabc7cc05250e3e5] Caught exception of type Wikimedia\\Rdbms\\DBTransactionStateError",
        "errorclass": "Wikimedia\\Rdbms\\DBTransactionStateError"
    }
}