Knime 4.4 Cant merge variable stacks! (likely a loop problem)

Good afternoon,

We are encountering an error when running a job through the Knime webportal.

We have 2 table row to variable loops starts and loop ends (shown in screenshot) that work fine on the local workflow, or even when running a server job locally.

However, when running the workflow through the webportal, the job fails and upon analysis we are receiving the error “Cant merge variable stacks! (likely a loop problem)”

Within the metanode “promote column headers”, the failing nodes are shown as such:

Please can you assist us.

Thanks in advance,

Joshua