Do not treat an external patch as confirmation that a leaking connection is safe. The correct remedy depends on the fitting, seal, alignment and condition, and manufacturers may prohibit particular sealants on their assemblies.
What the observation tells you
Tape can hide where water first appears while the original defect remains. Applying a product also changes the surface an engineer needs to inspect. Avoid tightening or coating the joint without knowing the model-specific assembly requirements.
A useful next step
Stop using the affected water path and arrange a proper assessment. Tell the engineer if any patching material has already been applied so it can be accounted for during the repair.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.