The Minecraft Launcher

We do not have enough information to find the cause of this issue.

Please attach the full launcher log found in [minecraft/launcher_log.txt|http://hopper.minecraft.net/help/guides/finding-minecraft-data-folder/].

_{This issue has been temporarily closed as Awaiting Response. Once the requested information has been delivered, the report will be reopened automatically.}

Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Customer Support – 📖 Game Wiki

Also, if you're using the beta launcher, please check whether the workaround from MCL-12279 solves the issue.