Update backend.py

backend.py

@@ -7,7 +7,13 @@ from PyPDF2 import PdfReader
 import spacy
 
 # Load SpaCy and models
-nlp = spacy.load("en_core_web_sm")
+try:
+    nlp = spacy.load("en_core_web_sm")
+except OSError:
+    from spacy.cli import download
+    download("en_core_web_sm")
+    nlp = spacy.load("en_core_web_sm")
+    
 embedding_model = SentenceTransformer("all-MiniLM-L6-v2")
 
 tokenizer = T5Tokenizer.from_pretrained("./T5base_Question_Generation")