[Core] Logprobs support in Multi-step (#7652)

vllm/model_executor/models/blip2.py

@@ -13,13 +13,13 @@ from vllm.inputs import INPUT_REGISTRY, InputContext, LLMInputs
 from vllm.model_executor.layers.activation import get_act_fn
 from vllm.model_executor.layers.logits_processor import LogitsProcessor
 from vllm.model_executor.layers.quantization import QuantizationConfig
-from vllm.model_executor.layers.sampler import Sampler
+from vllm.model_executor.layers.sampler import Sampler, SamplerOutput
 from vllm.model_executor.model_loader.weight_utils import default_weight_loader
 from vllm.model_executor.models.opt import OPTModel
 from vllm.model_executor.sampling_metadata import SamplingMetadata
 from vllm.multimodal import MULTIMODAL_REGISTRY
 from vllm.sequence import (VLLM_TOKEN_ID_ARRAY_TYPE, IntermediateTensors,
-                           SamplerOutput, SequenceData)
+                           SequenceData)
 
 from .blip import (BlipVisionModel, dummy_image_for_blip,
                    get_max_blip_image_tokens)