Bryntum Support Forums

Good afternoon. In one of the cases I encountered the following error when importing a plan from a MS Project file.

Please help me with a solution. Critical for Business

version 5.0.3 and 5.0.6
Data in attach

Uncaught (in promise) TypeError: interval.copyWith is not a function
    at calculateEffectiveEndDateConstraintInterval (gantt.module.js:191299:1)
    at calculateEffectiveEndDateConstraintInterval.next (<anonymous>)
    at ClassDefEx.calculateEffectiveConstraintInterval (gantt.module.js:191375:1)
    at calculateEffectiveConstraintInterval.next (<anonymous>)
    at ClassDefEx.doCalculateEarlyEffectiveEndDateInterval (gantt.module.js:191426:1)
    at doCalculateEarlyEffectiveEndDateInterval.next (<anonymous>)
    at ClassDefEx.calculateEarlyEndDateRaw (gantt.module.js:191569:1)
    at calculateEarlyEndDateRaw.next (<anonymous>)
    at Quark.continueCalculation (gantt.module.js:183081:1)
    at EngineTransaction.onReadIdentifier (gantt.module.js:184728:1)

Hey,

Using this data.json file that you provided, in the same version that you mentioned, I got the following image attached.

Could you please share how your configuration is set up??

Sorry, I forgot to mention that this error only occurs when the tree building mode is on.
Turn on next gantt configuration

taskStore:  {tree: true, transformFlatData: true}

Problem has been reproduced. After debugging we didn't find any obvious reasons why it happened, we created a ticket to have a look deeply: https://github.com/bryntum/support/issues/4854

If we remove constraints from Task73, no error appeared, so the problem somewhere around that.

Thank you for the report.

Understood thanks. Can you tell me if we can increase the priority of this issue? Strong business impact

We will try to investigate this in the next two weeks!

mats wrote: ↑Mon Jun 27, 2022 11:14 am

We will try to investigate this in the next two weeks!

Thank you. Will wait