assemblycom · SandipBajracharya · Feb 4, 2026 · Feb 4, 2026 · Feb 4, 2026 · Feb 4, 2026
diff --git a/package.json b/package.json
@@ -46,6 +46,7 @@
     "react-time-ago": "^7.3.5",
     "require-in-the-middle": "7.5.2",
     "tailwind-merge": "^3.3.1",
+    "unorm": "^1.6.0",
     "zod": "^4.1.1"
   },
   "devDependencies": {
@@ -61,6 +62,7 @@
     "@types/react": "^19",
     "@types/react-dom": "^19",
     "@types/react-linkify": "^1.0.4",
+    "@types/unorm": "^1.3.31",
     "drizzle-kit": "^0.31.4",
     "husky": "^9.1.7",
     "lint-staged": "^16.1.5",

diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
diff --git a/src/features/sync/lib/Sync.service.ts b/src/features/sync/lib/Sync.service.ts
@@ -191,7 +191,7 @@ export class SyncService extends AuthenticatedDropboxService {
         error.status === 400 &&
         error.body.message === 'Folder already exists'
       ) {
-        console.info({ message: error.body.message })
+        console.info({ message: error.body.message, path: itemPath })
         await this.handleFolderCreatedCase(
           lastItem,
           tempFileType,
@@ -202,7 +202,7 @@ export class SyncService extends AuthenticatedDropboxService {
         return
       }
       console.error(
-        `SyncService#createAndUploadFileToAssembly. Upload failed. Channel ID: ${assemblyChannelId}`,
+        `SyncService#createAndUploadFileToAssembly. Upload failed. Channel ID: ${assemblyChannelId}. Path: ${itemPath}`,
       )
       throw error
     }

diff --git a/src/lib/copilot/CopilotAPI.ts b/src/lib/copilot/CopilotAPI.ts
@@ -43,6 +43,7 @@ import {
 } from '@/lib/copilot/types'
 import logger from '@/lib/logger'
 import { withRetry } from '@/lib/withRetry'
+import { sanitizeFileNameForAssembly } from '@/utils/filePath'
 
 export class CopilotAPI {
   readonly copilot: SDK
@@ -191,7 +192,7 @@ export class CopilotAPI {
     const createFileResponse = await this.copilot.createFile({
       fileType,
       requestBody: {
-        path,
+        path: sanitizeFileNameForAssembly(path),
         channelId,
       },
     })

diff --git a/src/utils/filePath.ts b/src/utils/filePath.ts
@@ -1,5 +1,6 @@
 import * as p from 'node:path'
 import dayjs from 'dayjs'
+import unorm from 'unorm'
 import { ObjectType } from '@/db/constants'
 
 export function buildPathArray(path: string): string[] {
@@ -79,3 +80,12 @@ export function splitPathAndFolder(fullPath: string): { path: string; folder: st
 export function sanitizePath(path: string) {
   return path.replace(/^\/+/, '')
 }
+
+export function sanitizeFileNameForAssembly(filename: string): string {
+  return unorm
+    .nfd(filename) // decompose accents
+    .replace(/[\u0300-\u036f]/g, '') // remove diacritics
+    .replace(/[^a-zA-Z0-9._-]/g, '_') // replace special chars with _
+    .replace(/_+/g, '_') // collapse multiple _
+    .replace(/^_+|_+$/g, '') // trim _ from ends
+}
-export function sanitizeFileNameForAssembly(filename: string): string {
-  const lastDotIndex = filename.lastIndexOf('.')
-
-  // if there's no extension, sanitize the whole filename
-  if (lastDotIndex === -1) {
-    return filename.replace(/[^a-zA-Z0-9_-]/g, ' ')
-  }
-
-  const name = filename.slice(0, lastDotIndex)
-  const extension = filename.slice(lastDotIndex + 1)
-
-  const sanitizedName = name.replace(/[^a-zA-Z0-9_-]/g, ' ')
-
-  return `${sanitizedName}.${extension}`
-}
+export function sanitizeFileNameForAssembly(filename: string): string {
+  const lastDotIndex = filename.lastIndexOf('.')
+  const sanitizedName = name.replace(/[^a-zA-Z0-9_-]/g, ' ')
+
+  // if there's no extension, sanitize the whole filename
+  if (lastDotIndex === -1) {
+    return sanitizedName
+  }
+
+  const name = sanitizedName.slice(0, lastDotIndex)
+  const extension = sanitizedName.slice(lastDotIndex + 1)
+
+  return `${sanitizedName}.${extension}`
+}
-export function sanitizeFileNameForAssembly(filename: string): string {
-  const lastDotIndex = filename.lastIndexOf('.')
-
-  // if there's no extension, sanitize the whole filename
-  if (lastDotIndex === -1) {
-    return filename.replace(/[^a-zA-Z0-9_-]/g, ' ')
-  }
-
-  const name = filename.slice(0, lastDotIndex)
-  const extension = filename.slice(lastDotIndex + 1)
-
-  const sanitizedName = name.replace(/[^a-zA-Z0-9_-]/g, ' ')
-
-  return `${sanitizedName}.${extension}`
-}
+export function sanitizeFileNameForAssembly(filename: string): string {
+  const lastDotIndex = filename.lastIndexOf('.')
+  const sanitizedName = name.replace(/[^a-zA-Z0-9_-]/g, ' ')
+
+  // if there's no extension, sanitize the whole filename
+  if (lastDotIndex === -1) {
+    return sanitizedName
+  }
+
+  const name = sanitizedName.slice(0, lastDotIndex)
+  const extension = sanitizedName.slice(lastDotIndex + 1)
+
+  return `${sanitizedName}.${extension}`
+}