After adding implementation fg.deobf("curse.maven:estrogen-850410:6396807") to my project's build.gradle, I receive the mentioned error above in the issue title ...
[MCDL] insertSafety: how to insert assetIndex? [MCDL] insertSafety: how to insert assets? [MCDL] Warning: JNA version required by 1.21.4-forge-54.1.0 is 5.15.0 > 5.13.0, skipping JNA replacement.