Complex flow doesn't work.

[songql]

I have created a LangFlow workflow, which is quite complex and uses many components (nearly 200).

I'm currently facing a problem:

The workflow terminates about halfway through its execution, and the console logs show many entries similar to the following:

2026-01-02T16:05:18.423204Z [info     ] Cache item for key 'QwenModelComponent-NouLK' has expired and will be deleted.
2026-01-02T16:05:18.633312Z [info     ] Cache item for key 'ImageProcessingComponent-3wyuc' has expired and will be deleted.
2026-01-02T16:05:18.642720Z [info     ] Cache item for key 'ImageProcessingComponent-EiiFq' has expired and will be deleted.
2026-01-02T16:05:18.932557Z [info     ] Cache item for key 'Chroma-zOnzA' has expired and will be deleted.
2026-01-02T16:05:19.055417Z [info     ] Cache item for key 'Prompt Template-8emXk' has expired and will be deleted.
2026-01-02T16:05:19.055417Z [info     ] Cache item for key 'JSONConversionComponent-2jU3W' has expired and will be deleted.
2026-01-02T16:05:19.193729Z [info     ] Cache item for key 'Prompt Template-4ekFc' has expired and will be deleted.
2026-01-02T16:05:23.249008Z [error    ] Error building Component
2026-01-02T16:05:28.139026Z [info     ] Cache item for key 'QwenModelComponent-6t8kT' has expired and will be deleted.
2026-01-02T16:05:28.263020Z [error    ] Task Prompt Template-FJSIh Run 0 failed with exception: Component 3.1 information has not been built yet
2026-01-02T16:05:28.264068Z [error    ] Error building Component
2026-01-02T16:05:28.264980Z [error    ] Error executing tasks in layer 37
2026-01-02T16:05:28.264980Z [error    ] Error running flow 29489b5b-d933-4120-b8c2-be333e7b93df task

I would like to understand the execution mechanism of the LangFlow workflow.

• Do the inputs/outputs of each component have an expiration time?
• Is there a limit on the overall workflow execution time?
• Is there a limit on the number of concurrent component nodes?
• Is there a limit on the execution time of a single component node?
• Or are there other reasons why the workflow cannot complete its execution?

Who can tell me the real reason and how to make my flow work.