fix backend call, revert dependency bump

Author: RRosio

jupyter_fsspec/handlers.py

@@ -260,9 +260,10 @@ async def process_content(self, content):
 
         if content:
             try:
-                content = base64.b64decode(content, validate=True)
+                content = base64.b64decode(content)
             except (binascii.Error, UnicodeDecodeError) as e:
                 logger.error(f"Error decoding base64: {e}")
+                raise
         return content
 
     # GET

package.json

@@ -59,12 +59,12 @@
         "watch:labextension": "jupyter labextension watch ."
     },
     "dependencies": {
-        "@jupyterlab/application": "^4.3.0",
-        "@jupyterlab/apputils": "^4.3.0",
-        "@jupyterlab/docregistry": "^4.3.0",
-        "@jupyterlab/filebrowser": "^4.3.0",
-        "@jupyterlab/settingregistry": "^4.3.0",
-        "@jupyterlab/ui-components": "^4.3.0",
+        "@jupyterlab/application": "^4.0.0",
+        "@jupyterlab/apputils": "^4.0.0",
+        "@jupyterlab/docregistry": "^4.0.0",
+        "@jupyterlab/filebrowser": "^4.0.0",
+        "@jupyterlab/settingregistry": "^4.0.0",
+        "@jupyterlab/ui-components": "^4.0.0",
         "buffer": "^6.0.3",
         "path": "^0.12.7",
         "react": "^18.3.1",