I cannot use large fluid tank mod because fabric scala version is not updated to 1.19.3. Do you have any suggestions about this situation?

Scala 1.1.0+scala.2.13.6 version gives an error.

For the scala plugin, ask them to update description.

I think you're talking about fabric-language-scala.
1.19.2 and 1.19.3 are not included in the Game version, but they work fine in both version.
So you can use Scala 1.1.0+scala.2.13.6 for my mod.
I don't know how you install mods, but the most classical way is to put the Jar manually.

Edit: Fixed typo.

What kind of error did you get?
Give me crash report and minecraft logs, please.

This error is not caused by large fluid tanks mod. This is because the scala mod is out of date.

Again, what error did you get?
The scala plugin is not updated for a year(both the content and description), but I made sure that the version works in 1.19.3 environment before I upload my mod.

Tested with these files

InfChest-Fabric-1.19.3-19.6.jar
Jade-1.19.3-fabric-9.3.1.jar
LargeFluidTank-19.2.0-fabric.jar
RoughlyEnoughItems-10.0.592.jar
appliedenergistics2-fabric-13.0.6-beta.jar
architectury-7.1.70-fabric.jar
cloth-config-9.0.94-fabric.jar
fabric-api-0.74.0+1.19.3.jar
fabric-language-scala-1.1.0+scala.2.13.6-fat.jar

i tried this way and got error again
fabric-api-0.74.0+1.19.3
cloth-config-9.0.94-fabric
appliedenergistics2-fabric-13.0.6-beta
architectury-7.1.70-fabric
fabric-language-scala-1.1.0+scala.2.13.6-fat
latest.log
rei.log
rei-issues.log
crash-2023-02-19_05.50.43-client.txt

LargeFluidTank-19.2.0-fabric
RoughlyEnoughItems-10.0.592

The report says something in my mod caused this crash.

net.minecraft.class_151: Non [a-z0-9/._-] character in path of location: fluidtank:tank_ıron

I don't know the letter "ı".

What language do you use in Minecraft and your OS?

I use Turkish language

OK, thank you for this information.
I use toLowerCase in my code but the result may contain non ascii letter in some language.
"I" should converted to "i", but failed.

I'll fix my code not to depend OS locales.

Fixed in 19.4.0.
Thank you for reporting.