First, remove the battery and disconnect the charger, check the pins or connectors in the battery compartment, and make sure that they are positioned correctly to contact the battery. Then use a q-tip with alcohol to clean and dry them. Poor contact can cause this issue. make sure that the battery is fully charged. Low power can cause this. Next, the only safe thing to try before returning the unit or sending the camera for service is to use canned compressed air to blow out the area between the lens barrel and camera body since even a small amount of sand or grit can cause this problem.
Finally, the firmware update from Panasonic may address, at least, part of this issue. Carefully, follow the instructions at the link below if there is no improvement.
Please keep in mind that my diagnosis & solutions provided are directly
dependent on the accuracy of your description of the problem. As with
any "do it yourself" fixes, success is a "team effort", since I can't
see or touch the camera, and relies on the customer's manual dexterity
and ability to follow the instructions well.If you require additional information, please use the Reply to ***** to contact me. Click the ratings only after our exchange is complete and you are satisfied.
If, and only if my answer to your question is helpful and you are Satisfied with it, please leave Positive Feedback. Thank you