TypeError: uni.requestFileSystem is not a function

This error message indicates that the function "uni.requestFileSystem" is not recognized or available in the current environment.

This function may be specific to a certain framework or library, or it may have been deprecated or removed in a newer version.

To resolve this issue, you may need to check the documentation or resources for the framework or library you are using, and see if there is a different function or method that can accomplish the same task. Alternatively, you may need to update your code or dependencies to a newer version that includes the necessary function.