Why didn't you mention disk5 is invalid? Are you still trying to rebuild it? You have problems communicating with multiple disks so the rebuild isn't going to be good. Likely a controller issue or possibly power related.
Why do you have so very many very small disks in your array? I always recommend fewer larger disks instead of more smaller disks. Larger disks perform better and are more cost effective. More disks require more ports, probably the root of your troubles. At some point more disks requires more expensive Unraid license, you need Pro with that many disks. More disks require more power. Most importantly, more disks are more points of failure, and you have multiple failures going on right now.
I haven't looked at SMART for each of this large number of disks. Are any of your disks showing SMART warnings on the Dashboard?
Did you test any of these disks before building a server out of them?
Post a screenshot of Main - Array Devices.