Troubleshooting

The tables below collect common symptoms and what to do about them. If your case is not listed, message the lab head or an admin with the page link and the time of the error.

Uploads and checks

Symptom	What to do
Checks and indexing do not start	The version lacks required files (a submission needs PDF + zip). Upload the rest, or click Chạy lại tất cả (Rerun all) in the Issues panel
LaTeX compile reports Lỗi (Error)	Read the ! … block in the finding, fix the TeX and upload a new version
Source ↔ submitted PDF match reports Lỗi (Error)	The PDF is scanned or has no text layer: export the PDF again from LaTeX
Similarity reports Chưa cấu hình (Not configured)	The admin has not entered Turnitin in Settings → Similarity
No PDF ↔ source jump button	No trustworthy SyncTeX yet: read the reason on the PDF bar, rerun the checks or submit the PDF compiled from that exact source
Upload fails with 403/400	The upload link expires after 600 seconds: try again; check the file size
A work created from a PDF has nothing filled in	AI is not configured or the cap was reached: use the LaTeX zip, a DOI/arXiv ID, or enter details by hand

Access

Symptom	What to do
You cannot see your own paper	You are not a member of the work yet: ask the person in charge or the lab head to add you
You are sent to the 2FA setup page	Lab head accounts must turn on 2FA; follow Sign in and 2FA
The invitation says it has expired	Invitations last 48 hours: ask the lab head to resend it

Files and Ask AI

Symptom	What to do
Uploading to My files says the quota is exceeded	Delete some files (including the bin) or ask the lab head to raise your quota
HTML/SVG files cannot be previewed	Intentional: only PDFs, images and text are shown; other types are download-only
Ask AI reports ai_budget_exceeded	The AI cost cap was reached: ask the admin to raise the cap or change the key
Ask AI cannot find the content of a paper you just uploaded	Indexing has not finished: wait a few minutes and ask again

CLI and MCP

Symptom	What to do
papers push reports not_found	The ISL-… code is outside your access: check the code or ask to be added to the work
The CLI says your sign-in has expired	Tokens last 90 days: run papers login again
The MCP client reports invalid_client	The client does not support CIMD: ask the admin to create a client (see Connect MCP)
/device says "Mã này đã thuộc tài khoản khác" (This code belongs to another account)	Sign in with the account that requested the connection, or cancel the connection in the app and request a new code