A concatenated PDF originating from a government institution caused this error.

Seemingly, the root cause is:

    9: was compressed 61[7] generation=0 types.Dict
<<
        <Kids, []>
        <Limits, []>
>>

According to the code, Limits must be of size 2. (

Attaching the crash log here, I am unable to share the originating document.
crash-sensitive.log

While trying to replicate the issue with a mock document, I've stumbled on another seemingly unrelated issue:

removeEmptyContentStreams: obj#:7 page content entry neither stream dict nor array.

Attaching both crash log and the mock document.

crash.log
Merge.pdf