Dev2049/callback example fix (#4010)

Closes #3997

---------

Co-authored-by: Akshaj Jain <akshaj.jain@gmail.com>

docs/modules/models/chat/integrations/anthropic.ipynb

@@ -88,7 +88,7 @@
    },
    "outputs": [],
    "source": [
-    "from langchain.callbacks.base import CallbackManager\n",
+    "from langchain.callbacks.manager import CallbackManager\n",
     "from langchain.callbacks.streaming_stdout import StreamingStdOutCallbackHandler"
    ]
   },
@@ -171,7 +171,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.1"
+   "version": "3.11.3"
   }
  },
  "nbformat": 4,

docs/modules/models/llms/integrations/llamacpp.ipynb

@@ -42,7 +42,7 @@
    "source": [
     "from langchain.llms import LlamaCpp\n",
     "from langchain import PromptTemplate, LLMChain\n",
-    "from langchain.callbacks.base import CallbackManager\n",
+    "from langchain.callbacks.manager import CallbackManager\n",
     "from langchain.callbacks.streaming_stdout import StreamingStdOutCallbackHandler"
    ]
   },
@@ -134,7 +134,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.10.6"
+   "version": "3.11.3"
   }
  },
  "nbformat": 4,