fix bug about fetching knowledge graph (#3394)

### What problem does this PR solve?


### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

api/apps/chunk_app.py

@@ -301,16 +301,13 @@ def retrieval_test():
 @login_required
 def knowledge_graph():
     doc_id = request.args["doc_id"]
-    e, doc = DocumentService.get_by_id(doc_id)
-    if not e:
-        return get_data_error_result(message="Document not found!")
     tenant_id = DocumentService.get_tenant_id(doc_id)
     kb_ids = KnowledgebaseService.get_kb_ids(tenant_id)
     req = {
         "doc_ids":[doc_id],
         "knowledge_graph_kwd": ["graph", "mind_map"]
     }
-    sres = retrievaler.search(req, search.index_name(tenant_id), kb_ids, doc.kb_id)
+    sres = retrievaler.search(req, search.index_name(tenant_id), kb_ids)
     obj = {"graph": {}, "mind_map": {}}
     for id in sres.ids[:2]:
         ty = sres.field[id]["knowledge_graph_kwd"]

api/apps/document_app.py

@@ -524,7 +524,7 @@ def upload_and_parse():
 @manager.route('/parse', methods=['POST'])
 @login_required
 def parse():
-    url = request.json.get("url")
+    url = request.json.get("url") if request.json else ""
     if url:
         if not is_valid_url(url):
             return get_json_result(
@@ -537,7 +537,7 @@ def parse():
         options.add_argument('--disable-dev-shm-usage')
         driver = Chrome(options=options)
         driver.get(url)
-        sections = RAGFlowHtmlParser()("", binary=driver.page_source)
+        sections = RAGFlowHtmlParser().parser_txt(driver.page_source)
         return get_json_result(data="\n".join(sections))
 
     if 'file' not in request.files: