Plugin accounting-files failed: TypeError [ERR_INVALID_ARG_TYPE]

[sebasanta]

When starting Haraka with haraka-plugin-accounting-files installed I get this error:
[CRIT] [-] [server] Plugin accounting-files failed: TypeError [ERR_INVALID_ARG_TYPE]: The "data" argument must be of type string or an instance of Buffer, TypedArray, or DataView. Received undefined
at Object.writeFileSync (node:fs:2350:5)
at createFileIfNotExist (node_modules/haraka-plugin-accounting-files/index.js:393:12)
at GenerateNewFile (node_modules/haraka-plugin-accounting-files/index.js:360:9)
at exports.init_plugin (node_modules/haraka-plugin-accounting-files/index.js:75:5)
at plugins.run_next_hook (node_modules/Haraka/plugins.js:518:28)
at plugins.run_hooks (node_modules/Haraka/plugins.js:429:13)
at Server.setup_smtp_listeners (node_modules/Haraka/server.js:459:14)
at process.processTicksAndRejections (node:internal/process/task_queues:95:5)

I fixed this by changing line 393 of index.js
from fs.writeFileSync(filename);
to fs.writeFileSync(filename,'');