What happens?: in wikidata all math formulas (for example in https://www.wikidata.org/wiki/Q74760821) gives MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "http://localhost:6011/www.wikidata.org/v1/v1/":):
Other information (browser name/version, screenshots, etc.): Chrome, Ubuntu