A damaged container needs appropriate replacement or assessment before normal use. A crack may leak only when the tank contains water or is handled, so one dry observation is insufficient.
Understanding this situation
Do not use glue or household sealant without manufacturer approval. The container's shape, seating and any associated parts can matter, and a similar-looking tank from another model may not be compatible.
A useful next step
Use the full appliance reference to identify the correct solution. Keep the dryer unused if leakage could affect electrical areas. Report where the water appeared and whether the tank was fully seated rather than assuming every puddle has the same source.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.