Sorry, I don't quite understand what you're saying.
1.14.3 requires Fabric to run, not Forge. If you're trying to run it with Forge, then Forge may pick up on remnants of the half broken 1.13.2 version which may still partially exist within the jar because at one point I did update to 1.13.2 (but was never able to get that fully working) before finally skipping it in favor of 1.14.