Powerful845tiger

The issue has been fixed on the latest version of Mekanism mod, so updating it would fix the issue

The version you are using is no longer supported on this forum. Please update to a modern version of Minecraft to receive support. Currently supported versions are 1.19.2 (Latest) and 1.18.2 (LTS).

try removing optifine

The Minecraft crash report indicates that the game crashed due to an I/O error that occurred when writing to the file system. Specifically, the error occurred when trying to save the "bettermineshaft." configuration file in the "All the Mods 8 - ATM8" instance of Minecraft. The exact cause of the error is not specified in the report, but it is likely that the file system was unable to write to the file due to a permissions issue or because the file was being accessed by another program at the time. To resolve the issue, you can try running the game as an administrator or closing any other programs that might be accessing the file.

Currently your server is running from onedrive folder which could cause issue. Please move it to another folder and see if the issue persists, or if you get an different error, share the new log

The version you are using is no longer supported on this forum. Please update to a modern version of Minecraft and share your log. Currently supported versions are 1.19.2 (Latest) and 1.18.2 (LTS).

The version you are using is no longer supported on this forum. Please update to a modern version of Minecraft to receive support. Currently supported versions are 1.19.2 (Latest) and 1.18.2 (LTS).

legendarytooltips and torohealth are client side mods so remove it from the server

The version you are using is no longer supported on this forum. Please update to a modern version of Minecraft to receive support. Currently supported versions are 1.19.2 (Latest) and 1.18.2 (LTS).

Optifine might be causing issues.

ToroHealth and legendarytooltips are client side mods so remove it from the server

Don't use optifine and use Rubidium instead

The version you are using is no longer supported on this forum. Please update to a modern version of Minecraft to receive support. Currently supported versions are 1.19.2 (Latest) and 1.18.2 (LTS).

The log is quiet self explanatory and the version you are using is no longer supported on this forum. Please update to a modern version of Minecraft to receive support. Currently supported versions are 1.19.2 (Latest) and 1.18.2 (LTS).

The version you are using is no longer supported on this forum. Please update to a modern version of Minecraft to receive support. Currently supported versions are 1.19.2 (Latest) and 1.18.2 (LTS).

please share the log

Does it work without optifine?

Please share the whole crash report

The version you are using is no longer supported on this forum. Please update to a modern version of Minecraft to receive support. Currently supported versions are 1.19.2 (Latest) and 1.18.2 (LTS).

Was a crash report generated?

lumberjack hasn't been updated for 1.19.3, so you might need to remove that mod for now

Yes

1.16.5 is no longer supported on this forum. We only support 1.18.x and 1.19.x.

TLauncher is a cracked/pirate client and is therefore not supported here.