[18:31:00] 'determinecolors' errored after 956 μs
[18:31:00] TypeError: Cannot read property 'length' of undefined
at Gulp.<anonymous> (/home/travis/build/FachstudieBTZ/ultimate-message-broker-comparison/gulpfile.js:74:46)
at module.exports (/home/travis/build/FachstudieBTZ/ultimate-message-broker-comparison/node_modules/orchestrator/lib/runTask.js:34:7)
at Gulp.Orchestrator._runTask (/home/travis/build/FachstudieBTZ/ultimate-message-broker-comparison/node_modules/orchestrator/index.js:273:3)
at Gulp.Orchestrator._runStep (/home/travis/build/FachstudieBTZ/ultimate-message-broker-comparison/node_modules/orchestrator/index.js:214:10)
at Gulp.Orchestrator.start (/home/travis/build/FachstudieBTZ/ultimate-message-broker-comparison/node_modules/orchestrator/index.js:134:8)
at runNextSet (/home/travis/build/FachstudieBTZ/ultimate-message-broker-comparison/node_modules/run-sequence/index.js:86:16)
at Gulp.onTaskEnd (/home/travis/build/FachstudieBTZ/ultimate-message-broker-comparison/node_modules/run-sequence/index.js:75:5)
at emitOne (events.js:101:20)
at Gulp.emit (events.js:188:7)
at Gulp.Orchestrator._emitTaskDone (/home/travis/build/FachstudieBTZ/ultimate-message-broker-comparison/node_modules/orchestrator/index.js:264:8)
If a column is defined with no values (in the table.json) the following line creates a TypeError: https://github.com/ultimate-comparisons/ultimate-comparison-BASE/blob/master/gulpfile.js#L74