Unhandled rejection TypeError: Cannot read property 'length' of undefined

[jancurn]

For a reference, we have this unhandled error:

Unhandled rejection TypeError: Cannot read property 'length' of undefined
    at row (/home/apifier/app/programs/server/npm/node_modules/xlsx-write-stream/dist/templates/row.js:19:49)
    at XLSXRowTransform._transform (/home/apifier/app/programs/server/npm/node_modules/xlsx-write-stream/dist/XLSXRowTransform.js:22:44)
    at XLSXRowTransform.Transform._read (_stream_transform.js:186:10)
    at XLSXRowTransform.Transform._write (_stream_transform.js:174:12)
    at doWrite (_stream_writable.js:397:12)
    at writeOrBuffer (_stream_writable.js:383:5)
    at XLSXRowTransform.Writable.write (_stream_writable.js:290:11)
    at ToXlsx.ondata (_stream_readable.js:639:20)
    at emitOne (events.js:116:13)
    at ToXlsx.emit (events.js:211:7)
    at addChunk (_stream_readable.js:263:12)
    at readableAddChunk (_stream_readable.js:250:11)
    at ToXlsx.Readable.push (_stream_readable.js:208:10)
    at ToXlsx.Transform.push (_stream_transform.js:147:32)
    at ToXlsx._writeHead (imports/lib/api/api_v1_transform.server.js:299:9)
    at ToXlsx._maybeGenerateColumnNames (imports/lib/api/api_v1_transform.server.js:118:13)
    at ToXlsx._transform (imports/lib/api/api_v1_transform.server.js:139:9)
    at ToXlsx.Transform._read (_stream_transform.js:186:10)
    at ToXlsx.Transform._write (_stream_transform.js:174:12)
    at doWrite (_stream_writable.js:397:12)
    at writeOrBuffer (_stream_writable.js:383:5)
    at ToXlsx.Writable.write (_stream_writable.js:290:11)
    at Clean.ondata (_stream_readable.js:639:20)
    at emitOne (events.js:116:13)
    at Clean.emit (events.js:211:7)
    at addChunk (_stream_readable.js:263:12)
    at readableAddChunk (_stream_readable.js:250:11)
    at Clean.Readable.push (_stream_readable.js:208:10)