I would suggest following these few steps in order to help you fix this issue:
- Clear your browser's cache and cookies. - Make sure your browser is up-to-date. You can check here. - Try from a different browser. - Try from another computer. - Disabling any browser extensions one by one. - Temporarily turn off any ad blocker software you're running. - Make sure that an antivirus present on the computer isn't running any kind of ad blocker.