add check before adding new document

packages/components/nodes/chains/ConversationChain/ConversationChain.ts

@@ -71,7 +71,9 @@ class ConversationChain_Chains implements INode {
         const flattenDocs = docs && docs.length ? flatten(docs) : []
         const finalDocs = []
         for (let i = 0; i < flattenDocs.length; i += 1) {
-            finalDocs.push(new Document(flattenDocs[i]))
+            if (flattenDocs[i] && flattenDocs[i].pageContent) {
+                finalDocs.push(new Document(flattenDocs[i]))
+            }
         }
 
         let finalText = ''

packages/components/nodes/vectorstores/Chroma/Chroma_Upsert.ts

@@ -98,7 +98,9 @@ class ChromaUpsert_VectorStores implements INode {
         const flattenDocs = docs && docs.length ? flatten(docs) : []
         const finalDocs = []
         for (let i = 0; i < flattenDocs.length; i += 1) {
-            finalDocs.push(new Document(flattenDocs[i]))
+            if (flattenDocs[i] && flattenDocs[i].pageContent) {
+                finalDocs.push(new Document(flattenDocs[i]))
+            }
         }
 
         const obj: {

packages/components/nodes/vectorstores/Elasticsearch/Elasticsearch_Upsert.ts

@@ -38,7 +38,9 @@ class ElasicsearchUpsert_VectorStores extends ElasticSearchBase implements INode
         const flattenDocs = docs && docs.length ? flatten(docs) : []
         const finalDocs = []
         for (let i = 0; i < flattenDocs.length; i += 1) {
-            finalDocs.push(new Document(flattenDocs[i]))
+            if (flattenDocs[i] && flattenDocs[i].pageContent) {
+                finalDocs.push(new Document(flattenDocs[i]))
+            }
         }
 
         // The following code is a workaround for a bug (Langchain Issue #1589) in the underlying library.

packages/components/nodes/vectorstores/Faiss_Upsert/Faiss_Upsert.ts

@@ -80,7 +80,9 @@ class FaissUpsert_VectorStores implements INode {
         const flattenDocs = docs && docs.length ? flatten(docs) : []
         const finalDocs = []
         for (let i = 0; i < flattenDocs.length; i += 1) {
-            finalDocs.push(new Document(flattenDocs[i]))
+            if (flattenDocs[i] && flattenDocs[i].pageContent) {
+                finalDocs.push(new Document(flattenDocs[i]))
+            }
         }
 
         const vectorStore = await FaissStore.fromDocuments(finalDocs, embeddings)

packages/components/nodes/vectorstores/InMemory/InMemoryVectorStore.ts

@@ -71,7 +71,7 @@ class InMemoryVectorStore_VectorStores implements INode {
         const flattenDocs = docs && docs.length ? flatten(docs) : []
         const finalDocs = []
         for (let i = 0; i < flattenDocs.length; i += 1) {
-            if (flattenDocs[i] !== undefined && flattenDocs[i].pageContent !== undefined) {
+            if (flattenDocs[i] && flattenDocs[i].pageContent) {
                 finalDocs.push(new Document(flattenDocs[i]))
             }
         }

packages/components/nodes/vectorstores/Milvus/Milvus_Upsert.ts

@@ -110,7 +110,9 @@ class Milvus_Upsert_VectorStores implements INode {
         const flattenDocs = docs && docs.length ? flatten(docs) : []
         const finalDocs = []
         for (let i = 0; i < flattenDocs.length; i += 1) {
-            finalDocs.push(new Document(flattenDocs[i]))
+            if (flattenDocs[i] && flattenDocs[i].pageContent) {
+                finalDocs.push(new Document(flattenDocs[i]))
+            }
         }
 
         const vectorStore = await MilvusUpsert.fromDocuments(finalDocs, embeddings, milVusArgs)

packages/components/nodes/vectorstores/OpenSearch_Upsert/OpenSearch_Upsert.ts

@@ -86,7 +86,9 @@ class OpenSearchUpsert_VectorStores implements INode {
         const flattenDocs = docs && docs.length ? flatten(docs) : []
         const finalDocs = []
         for (let i = 0; i < flattenDocs.length; i += 1) {
-            finalDocs.push(new Document(flattenDocs[i]))
+            if (flattenDocs[i] && flattenDocs[i].pageContent) {
+                finalDocs.push(new Document(flattenDocs[i]))
+            }
         }
 
         const client = new Client({

packages/components/nodes/vectorstores/Pinecone/Pinecone_Upsert.ts

@@ -106,7 +106,9 @@ class PineconeUpsert_VectorStores implements INode {
         const flattenDocs = docs && docs.length ? flatten(docs) : []
         const finalDocs = []
         for (let i = 0; i < flattenDocs.length; i += 1) {
-            finalDocs.push(new Document(flattenDocs[i]))
+            if (flattenDocs[i] && flattenDocs[i].pageContent) {
+                finalDocs.push(new Document(flattenDocs[i]))
+            }
         }
 
         const obj: PineconeLibArgs = {

packages/components/nodes/vectorstores/Postgres_Upsert/Postgres_Upsert.ts

@@ -143,7 +143,9 @@ class PostgresUpsert_VectorStores implements INode {
         const flattenDocs = docs && docs.length ? flatten(docs) : []
         const finalDocs = []
         for (let i = 0; i < flattenDocs.length; i += 1) {
-            finalDocs.push(new Document(flattenDocs[i]))
+            if (flattenDocs[i] && flattenDocs[i].pageContent) {
+                finalDocs.push(new Document(flattenDocs[i]))
+            }
         }
 
         const vectorStore = await TypeORMVectorStore.fromDocuments(finalDocs, embeddings, args)

packages/components/nodes/vectorstores/Qdrant_Upsert/Qdrant_Upsert.ts

@@ -147,7 +147,9 @@ class QdrantUpsert_VectorStores implements INode {
         const flattenDocs = docs && docs.length ? flatten(docs) : []
         const finalDocs = []
         for (let i = 0; i < flattenDocs.length; i += 1) {
-            finalDocs.push(new Document(flattenDocs[i]))
+            if (flattenDocs[i] && flattenDocs[i].pageContent) {
+                finalDocs.push(new Document(flattenDocs[i]))
+            }
         }
 
         const dbConfig: QdrantLibArgs = {

packages/components/nodes/vectorstores/Redis/Redis_Upsert.ts

@@ -49,9 +49,11 @@ class RedisUpsert_VectorStores extends RedisSearchBase implements INode {
         const flattenDocs = docs && docs.length ? flatten(docs) : []
         const finalDocs = []
         for (let i = 0; i < flattenDocs.length; i += 1) {
-            const document = new Document(flattenDocs[i])
+            if (flattenDocs[i] && flattenDocs[i].pageContent) {
-            escapeAllStrings(document.metadata)
+                const document = new Document(flattenDocs[i])
-            finalDocs.push(document)
+                escapeAllStrings(document.metadata)
+                finalDocs.push(document)
+            }
         }
 
         return super.init(nodeData, _, options, flattenDocs)

packages/components/nodes/vectorstores/Singlestore_Upsert/Singlestore_Upsert.ts

@@ -140,7 +140,9 @@ class SingleStoreUpsert_VectorStores implements INode {
         const flattenDocs = docs && docs.length ? flatten(docs) : []
         const finalDocs = []
         for (let i = 0; i < flattenDocs.length; i += 1) {
-            finalDocs.push(new Document(flattenDocs[i]))
+            if (flattenDocs[i] && flattenDocs[i].pageContent) {
+                finalDocs.push(new Document(flattenDocs[i]))
+            }
         }
 
         let vectorStore: SingleStoreVectorStore

packages/components/nodes/vectorstores/Vectara/Vectara_Upsert.ts

@@ -132,7 +132,9 @@ class VectaraUpsert_VectorStores implements INode {
         const flattenDocs = docs && docs.length ? flatten(docs) : []
         const finalDocs = []
         for (let i = 0; i < flattenDocs.length; i += 1) {
-            finalDocs.push(new Document(flattenDocs[i]))
+            if (flattenDocs[i] && flattenDocs[i].pageContent) {
+                finalDocs.push(new Document(flattenDocs[i]))
+            }
         }
 
         const vectorStore = await VectaraStore.fromDocuments(finalDocs, embeddings, vectaraArgs)

packages/components/nodes/vectorstores/Weaviate_Upsert/Weaviate_Upsert.ts

@@ -143,7 +143,9 @@ class WeaviateUpsert_VectorStores implements INode {
         const flattenDocs = docs && docs.length ? flatten(docs) : []
         const finalDocs = []
         for (let i = 0; i < flattenDocs.length; i += 1) {
-            finalDocs.push(new Document(flattenDocs[i]))
+            if (flattenDocs[i] && flattenDocs[i].pageContent) {
+                finalDocs.push(new Document(flattenDocs[i]))
+            }
         }
 
         const obj: WeaviateLibArgs = {

packages/components/nodes/vectorstores/Zep/Zep_Upsert.ts

@@ -106,7 +106,9 @@ class Zep_Upsert_VectorStores implements INode {
         const flattenDocs = docs && docs.length ? flatten(docs) : []
         const finalDocs = []
         for (let i = 0; i < flattenDocs.length; i += 1) {
-            finalDocs.push(new Document(flattenDocs[i]))
+            if (flattenDocs[i] && flattenDocs[i].pageContent) {
+                finalDocs.push(new Document(flattenDocs[i]))
+            }
         }
 
         const zepConfig: IZepConfig = {