Open my project got weird error message. Then it blocked me from accessing my project.

Hi @User! Thank you for the screenshot.
Please clear the cache and data on the Forex Tester Online page.

‍Here’s how to do it in Chrome:

‍‍‍‍1) Open the FTO website in Chrome.

‍‍2) Click the lock icon in the address bar (to the left of the URL).

‍‍3) Select Site settings from the dropdown menu.

‍‍4) Scroll down and click Clear data (or Usage field - Delete data button).

‍‍5) Reload the page.

Does it help?