Error Solution: "java.lang.NullPointerException: Complete version is NULL" in TLauncher

An error occurs when you try to install the Minecraft version via TLauncher.

Solution:

1) Set the correct date and time on your computer.

2) Disable antivirus and firewall (or add the TLauncher and a Java exception).

3) Download the latest version of TLauncher, at the moment it is 2.22:

Download TLauncher 2.22 (Windows)

Download TLauncher 2.22 (MacOS/Linux)