Update abstract_graph.py

Adapt to some ollama modles with "nam/modelname" like ( 893379029/piccolo-large-zh-v2)

Author: stoensin

scrapegraphai/graphs/abstract_graph.py

@@ -157,7 +157,7 @@ def _create_llm(self, llm_config: dict, chat=False) -> object:
                 raise KeyError("Model not supported") from exc
             return Anthropic(llm_params)
         elif "ollama" in llm_params["model"]:
-            llm_params["model"] = llm_params["model"].split("/")[-1]
+            llm_params["model"] = llm_params["model"].split("ollama/")[-1]
 
             # allow user to set model_tokens in config
             try:
@@ -273,7 +273,7 @@ def _create_embedder(self, embedder_config: dict) -> object:
         elif "azure" in embedder_config["model"]:
             return AzureOpenAIEmbeddings()
         elif "ollama" in embedder_config["model"]:
-            embedder_config["model"] = embedder_config["model"].split("/")[-1]
+            embedder_config["model"] = embedder_config["model"].split("ollama/")[-1]
             try:
                 models_tokens["ollama"][embedder_config["model"]]
             except KeyError as exc: