DST (Daylight Savings) causes the issue, change your timezone by 1 hour forward or behind to fix it.
Don't use it, the function is broken in Stable and Beta.
It is a known bug, there's nothing you can do. Just ignore the fact and wait for the updates.
Solution 1. (If your the server owner) Inside of your config_gameplay file set the line idle_mode_enabled to false.
Solution 2. (If your not the server owner) Either find another server to play on or tell the server owner of that server to fix it.
Solution 1. Use "RESET ALL SETTINGS" launch option or set your Graphics API to DX11 and use default menu.
The game is broken on Windows 7 and most likely Northwood will drop support for it soon, You need to upgrade to Windows 10 and either way why would you still be on Windows 7 when its security is bad.
The game is not supported on Linux.
Solution 1. Most likely SCP:SL was not able to create a appdata folder, Simply go to \AppData\Roaming\ and make a folder called SCP Secret Laboratory and start the game back up.