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https://discord.gg/mXahVSKGVb
Join the official discord and look for the map editing section/roles. You'll get better and faster answers
Same error and attempts to fix it - Unfortunately, the OP has never replied again if the suggestions have worked. Maybe you can clear things out.
https://forum.faforever.com/topic/3786/java-util-concurrent-timeoutexception
it's not a map issue,this is a bug,closing the thread,thanks for the report.