unknown source.mode "{mode}"; falling back to "memory". Known modes: {list}.

Warnings reference › source.mode.*

Identifier

source.mode.*

Raised by

The grid (core)

Since

1.0.1

What happened

The source mode is not one the grid implements, so a memory source was built instead. Everything the intended mode would have done - fetching, paging, streaming, deriving - does not happen, and the grid shows only the rows it was handed directly.

The fix

Use one of the modes listed in the message.

The smallest fix

createGrid(el, { source: { mode: 'remote', fetch } });

Reference

Covered in full at the API reference.