If a problem occurs when you're using the website, the browser console can help to identify the cause. Copy the message from the error console and send it to support.
Yandex Browser
To open the error console, use the keyboard shortcut Ctrl + Shift + J (or ⌥ + ⌘+ J on macOS).
Other methods
Go to → Advanced → More tools → JavaScript console.
Right-click anywhere on the page, select Inspect element and go to the Console tab.
To the right of the Filter box, open the Default levels list and deselect all options except Errors.
Refresh the page or repeat the actions that lead to the error.
If there are error messages on the Console tab, expand the window to full screen (the icon) and make a screenshot of the contents.
If you need to scroll down to show all relevant information, take multiple screenshots.
To get more information, take a screenshot of the contents of the Network tab.
Safari
To open the error console, go to Safari → Preferences → Advanced and enable the Show Develop menu in menu bar option.
To open the error console, use the keyboard shortcut ⌥ + ⌘ + C.
Other methods
In the menu, select Develop → Show JavaScript Console.
Right-click anywhere on the page, select Inspect Element and go to the Console tab.
Go to the Console tab and turn on the Errors filter. Filter names may be hidden if the window is narrow: expand the window to see them.
Refresh the page or repeat the actions that lead to the error.
If there are error messages on the Console tab, expand the window to full screen and make a screenshot of the contents.
If you need to scroll down to show all relevant information, take multiple screenshots.
To get more information, take a screenshot of the contents in the Network tab.
Google Chrome
To open the error console, use the keyboard shortcut Ctrl + Shift + J.
Another method
Go to → More tools → Developer tools and go to the Console tab.
To the right of the Filter box, open the Default levels list and deselect all options except Errors.
Refresh the page or repeat the actions that lead to the error.
If there are error messages on the Console tab, expand the window to full screen (the icon) and make a screenshot of the contents.
If you need to scroll down to show all relevant information, take multiple screenshots.
To get more information, take a screenshot of the contents of the Network tab.
Opera
To open the error console, use the keyboard shortcut Ctrl + Shift + J.
Another method
In the top right corner, click Opera, select Developer → Developer tools and go to the Console tab.
To the right of the Filter box, open the Default levels list and deselect all options except Errors.
Refresh the page or repeat the actions that lead to the error.
If there are error messages on the Console tab, expand the window to full screen (the icon) and make a screenshot of the contents.
If you need to scroll down to show all relevant information, take multiple screenshots.
To get more information, take a screenshot of the contents of the Network tab.
Mozilla Firefox
To open the error console, use the keyboard shortcut Ctrl + Shift + J.
Other methods
Go to → Web Developer → Web Console.
Right-click anywhere on the page, select Inspect element and go to the Console tab.
Make sure that only the Mistakes item is selected in all filters (Network, CSS, JS, Security, Log, and Server). To do this, click the icon next to each filter.
Alert
By clicking the filter name instead of the icon, you disable error checking.
Refresh the page or repeat the actions that lead to the error.
If there are error messages on the Console tab, expand the window to full screen (click the icon) and make a screenshot of the contents.
If you need to scroll down to show all relevant information, take multiple screenshots.
Microsoft Edge
To open the error console, use the keyboard shortcut Ctrl + Shift + J.
Other methods
Go to → More Tools → Developer Tools.
Right-click anywhere on the page, select Inspect Element and go to the Console tab.
To the right of the Filter box, open the Default levels list and deselect all options except Errors.
Refresh the page or repeat the actions that lead to the error.
If there are error messages on the Console tab, expand the window to full screen (the icon) and make a screenshot of the contents.
If you need to scroll down to show all relevant information, take multiple screenshots.
To get more information, take a screenshot of the contents of the Network tab.