Description

LoRA loading fails with ModuleNotFoundError: No module named 'pipelines' when loading adapters via PeftLoRAStrategy.load_adapter().

Error from Grafana logs (Feb 26, 2026)

scope.core.pipelines.wan2_1.lora.strategies.peft_lora - ERROR - StreamDiffusionV2Pipeline.__init__: Failed to load LoRA: No module named 'pipelines'

scope.server.pipeline_manager - ERROR - Failed to load pipeline streamdiffusionv2: StreamDiffusionV2Pipeline.__init__: LoRA loading failed: No module named 'pipelines'

Root Cause

In src/scope/core/pipelines/wan2_1/lora/strategies/peft_lora.py line 414:

from pipelines.wan2_1.lora.utils import find_lora_pair, normalize_lora_key

This uses a hardcoded absolute import path pipelines.wan2_1.lora.utils that doesn't exist. The module is scope.core.pipelines.wan2_1.lora.utils.

The file already imports other functions from the same module correctly using relative imports at line 7:

from ..utils import (
    load_lora_weights,
    parse_lora_weights,
    sanitize_adapter_name,
    standardize_lora_for_peft,
)

Fix

Change line 414 to use the same relative import pattern:

from ..utils import find_lora_pair, normalize_lora_key

Or better yet, add these to the existing import block at the top of the file.

Impact

• Pipeline: streamdiffusionv2
• Severity: High - prevents LoRA loading entirely
• Frequency: Multiple occurrences (6+ failures in 12h monitoring window)