After T200820#4826332 I tried again without "stash and async" (as recommended on https://commons.wikimedia.org/wiki/User_talk:Rillke/bigChunkedUpload.js#Troubleshooting ), and I got the following
03054: 287/287> Server error 503 after uploading chunk: Response: <!DOCTYPE html> <html lang="en" dir="ltr"> <meta charset="utf-8"> <title>Wikimedia Error</title> <style> * { margin: 0; padding: 0; } body { background: #fff; font: 15px/1.6 sans-serif; color: #333; } .content { margin: 7% auto 0; padding: 2em 1em 1em; max-width: 640px; } img { float: left; margin: 0 2em 2em 0; } a img { border: 0; } h1 { margin-top: 1em; font-size: 1.2em; } p { margin: 0.7em 0 1em 0; } a { color: #0645AD; text-decoration: none; } a:hover { text-decoration: underline; } </style> 03054: 287/287> upload in progress Upload: 100% 03078: FAILED: internal_api_error_DBQueryError: [XBZngQpAAEwAACGSPNYAAACO] Caught exception of type Wikimedia\Rdbms\DBQueryError
Is this the same issue?
File in stash is 1698l1a6s3kw.c4ox7h.1.pdf