E-CE0015 — Internal len_at on jagged array check

Error Type	Compile Error
Phase	compiling the problem into an OMMX instance
Python exception	`ValueError`

Message

Internal error: `len_at({index})` on a jagged array (only `len_at(0)` is allowed).

This should have been caught by the type checker.

This is a bug in JijModeling - please report it to the developers in community Discord (https://discord.gg/Km5dKF9JjG) with the full error output.

Cause

An internal invariant of the compiler was violated; this cannot be produced by normal use of the library. Calling len_at with a positive axis on a jagged array is normally rejected earlier by the type checker as E-TE0002.

Fix

This is a bug in JijModeling. Please report it at the JijModeling community on Discord together with the full error output and, if possible, the model that produced it.