How do I delete/unset the references that are still present?

My mod has a compilation error. This is what the console says:

Executing Gradle task: build
Build info: MCreator 2023.3.36712, forge-1.20.1, 64-bit, 16075 MB, Windows 11, JVM 17.0.7, JAVA_HOME: C:\Program Files\Pylo\MCreator\jdk, started on: 2023-10-21-10:38:10


BUILD FAILED
Task completed in 5 minutes and 12 seconds

> Task :compileJava FAILED
C:\Users\redacted\MCreatorWorkspaces\weaponfull_mod\src\main\java\net\mcreator\weaponfullmod\init\WeaponfullModModTrades.java:21: error: cannot find symbol .add(new BasicItemListing(new ItemStack(WeaponfullModModItems.SILVER_COIN.get(), 3), new ItemStack(WeaponfullModModItems.BRONZE_COIN.get(), 6), new ItemStack(WeaponfullModModItems.DELETED_MOD_ELEMENT.get()), 3, 5, 0f));
                                                                          ^
symbol: variable DELETED_MOD_ELEMENT
location: class WeaponfullModModItems
1 error
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':compileJava'.
> Compilation failed; see the compiler error output for details.
* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.
* Get more help at https://help.gradle.org
BUILD FAILED in 2s
1 actionable task: 1 executed

BUILD FAILED
Task completed in 4 seconds

Somone told me to delete/unset the references that are still present. How do I do that?