failed to load initial data error

Does anybody know where can i find what is error about
console.js:35 Failed to load initial data Error: Unknown error, request ID: 1547725589.5865265265073107259

site www.ceglarnia.com when i enter “kartoteka” page i get this error in console

I opened the site in the Editor and went to the K KARTOTEKA page, ran Preview and I see no errors in the console. Please explain your problem in more detail.

Thanks for helping. I didnt write that its only in live page. i’m sending picture with console from chrome.
First error its new with this loading initial data. The other is because when i have cath err function this arror appears. But data loads good as it should.

you can log because its hidden page
misiewicz@hpworldwide.pl
info

its ok now so it was probably some temporary problem in Wix. thanks for time