[Fix] add import check of multimodal (#352)

opencompass/multimodal/models/__init__.py

@@ -8,9 +8,19 @@ if satisfy_requirement('salesforce-lavis'):
 if osp.exists('opencompass/multimodal/models/minigpt_4/MiniGPT-4'):
     from .minigpt_4 import *  # noqa: F401, F403
 
-from .llama_adapter_v2_multimodal import *  # noqa: F401, F403
+if osp.exists(
+        'opencompass/multimodal/models/llama_adapter_v2_multimodal/LLaMA-Adapter'  # noqa
+):
+    from .llama_adapter_v2_multimodal import *  # noqa: F401, F403
+
 from .llava import *  # noqa: F401, F403
-from .mplug_owl import *  # noqa: F401, F403
+
+if osp.exists('opencompass/multimodal/models/mplug_owl/mPLUG-Owl'):
+    from .mplug_owl import *  # noqa: F401, F403
+
 from .openflamingo import *  # noqa: F401, F403
-from .otter import *  # noqa: F401, F403
+
+if osp.exists('opencompass/multimodal/models/otter/Otter'):
+    from .otter import *  # noqa: F401, F403
+
 from .visualglm import *  # noqa: F401, F403