Server Error during initial instalation about ideaspace HOT 5 OPEN

I can replicate with a public "lamp stack" docker file. To replicate:

git clone https://github.com/sprintcube/docker-compose-lamp.git
cd docker-compose-lamp/
cp sample.env .env
rm -rf www
tar xzf IdeaSpace-1.2.2.tar.gz
mv IdeaSpace-1.2.2 www
chown -R 33:33 www
docker-compose up -d

• Access ideaspace at http://localhost, run through configuration (db host is "database", u/p are set in .env) , observe the error.

from ideaspace.

Which PHP version are you running on? 7.4?

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Which PHP version are you running on? 7.4?

yes

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Can this be fixed with any other version (of PHP)?

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I could be but I am not 100% sure. I will do a test shortly and my goal is to fix it so it works with PHP 7.4 as well.

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