Hey Wesley,
Thank you for reaching out to us! I’m so sorry to hear that you are having problems with your calendar. Let me help you to solve this!
To get started, can you please let us know when this issue started happening? Have you just installed The Events Calendar for the first time and found this problem? Have you had the plugin installed for a long time and then this suddenly started happening out of nowhere? Any information you can provide on the history of how this used to not happen up to now when it is happening can be helpful!
Also, could you please enable WP_DEBUG and WP_DEBUG_LOG and share with us any messages you see while accessing your Dashboard? All WP_DEBUG messages will be stored in a debug.log file in /wp-content.
Thanks!
Patricia