Upload error when uploading to appwrite using backblaze

Developers encountering an upload error when trying to upload a 1.4GB file to appwrite using Backblaze for storage. The error message states: "Invalid document structure: Attribute 'metadata' has invalid type. Value must be a valid string and no longer than 16384 chars." They also note that upload speeds are slow. Solution: Ensure that the 'metadata' attribute is correctly formatted as a string within the specified limits. Consider optimizing the upload process to potentially improve speed.