What does the error "Fontconfig error: Cannot load default config file: No such file: (null)" indicate in FFmpeg Drawtext?

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This error message indicates that FFmpeg Drawtext is unable to load the default font configuration file, and the file path is either missing or has been set to null. This error may occur due to a missing fontconfig library or an incorrect font directory set in the system. To resolve this error, you should ensure that the fontconfig library is correctly installed and configured, and that the font directory is set to the correct path in the system.