Save simple Chinese text in nocoDB via API is not working ?!?

Hello dear community
I have a challenge in an ongoing problem that I could not solve yet. I fill the NocoDB via API with data from forms . As part of the internationalization process, I am now adding form data from china written in simple chinese. Unfortunately, the Chinese characters cannot be saved. Therefore my question, which adjustments do I have to make and where, so that I can save the Chinese texts via the interface.

change the charset of the database. I changed it from utf8 to utf8mb4. after that it worked just fine.

Important: it can happend that already existing entries in the database have mixed characters because they where added with a different charset.

To prevent you from data lost, make an backup of your database