BUG: Some PDF files cannot be ingested since Aleph 3.15.6

[eddie1113]

Title: BUG: Some PDF files cannot be ingested since Aleph 3.15.6

Describe the bug
Some PDF files cannot be ingested since Aleph 3.15.6.
The problematic files contain about 50 scanned pages each.
Logs seem to indicate there is an issue with the ingest-file component.

To Reproduce
Steps to reproduce the behavior:

1. Install Aleph 3.15.6
2. Create a new project
3. Upload multiple documents containing 50 scanned pages each
4. Try to view the documents

Expected behavior
All uploaded documents should be viewable

Aleph version
Last working version: Aleph 3.15.5 (ingest-file 3.19.3)
Broken version: Aleph 3.15.6 (ingest-file 3.20.3)

Last working ingest-file version: 3.20.0
Broken ingest-file version: 3.20.1

Screenshots

Additional context
In version 3.15.5, the first document is unviewable (another bug?), but subsequent documents are OK.
In version 3.15.6, all document are unviewable.

Aleph_3.15.5.log
Aleph_3.15.6.log

[stchris]

Hi @eddie1113 , can you check if #4002 (comment) fixes this issue?