dovecot - Sep 2021 - Mail error log polluted with dovecot imap errors

I'm running debian bullseye. I've had issues running solr on debian due 
to some kind of bug I was able to patch by upgrading the os.

After the upgrade, everything seems to work perfectly fine and the 
search feature in my client using solr now works. However, I get 
hundreds of these pairs of errors every minute in mail.err

Sep 17 04:47:52 email dovecot: imap(s)<8699><1eOe/CzMbOl/AAAB>:
Error:
fts_solr: received invalid uid '102
Sep 17 04:47:52 email dovecot: imap: Error:     '
Sep 17 04:47:52 email dovecot: imap(s)<8699><1eOe/CzMbOl/AAAB>:
Error:
fts_solr: received invalid uid '103
Sep 17 04:47:52 email dovecot: imap: Error:     '
Sep 17 04:47:52 email dovecot: imap(s)<8699><1eOe/CzMbOl/AAAB>:
Error:
fts_solr: received invalid uid '104
Sep 17 04:47:52 email dovecot: imap: Error:     '
Sep 17 04:47:52 email dovecot: imap(s)<8699><1eOe/CzMbOl/AAAB>:
Error:
fts_solr: received invalid uid '105
Sep 17 04:47:52 email dovecot: imap: Error:     '
Sep 17 04:47:52 email dovecot: imap(s)<8699><1eOe/CzMbOl/AAAB>:
Error:
fts_solr: received invalid uid '106
Sep 17 04:47:52 email dovecot: imap: Error:     '
Sep 17 04:47:52 email dovecot: imap(s)<8699><1eOe/CzMbOl/AAAB>:
Error:
fts_solr: received invalid uid '118
Sep 17 04:47:52 email dovecot: imap: Error:     '
Sep 17 04:47:52 email dovecot: imap(s)<8699><1eOe/CzMbOl/AAAB>:
Error:
fts_solr: received invalid uid '132
Sep 17 04:47:52 email dovecot: imap: Error:     '
Sep 17 04:47:52 email dovecot: imap(s)<8699><1eOe/CzMbOl/AAAB>:
Error:
fts_solr: received invalid uid '133
Sep 17 04:47:52 email dovecot: imap: Error:     '
Sep 17 04:47:52 email dovecot: imap(s)<8699><1eOe/CzMbOl/AAAB>:
Error:
fts_solr: received invalid uid '134
Sep 17 04:47:52 email dovecot: imap: Error:     '
Sep 17 04:47:52 email dovecot: imap(s)<8699><1eOe/CzMbOl/AAAB>:
Error:
fts_solr: received invalid uid '135
Sep 17 04:47:52 email dovecot: imap: Error:     '
Sep 17 04:47:52 email dovecot: imap(s)<8699><1eOe/CzMbOl/AAAB>:
Error:
fts_solr: received invalid uid '136
Sep 17 04:47:52 email dovecot: imap: Error:     '
Sep 17 04:47:52 email dovecot: imap(s)<8699><1eOe/CzMbOl/AAAB>:
Error:
fts_solr: received invalid uid '137

...and so on


The bug I patched also threw a similar kind of error:

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=970692

I don't know if this is another debian issue or a misconfiguration on my 
end. I'm not sure where to begin to look. Can someone please point me in 
the right direction?

> 
> The bug I patched also threw a similar kind of error:
> 
> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=970692
> 
> I don't know if this is another debian issue or a misconfiguration on
> my end. I'm not sure where to begin to look. Can someone please point
> me in the right direction?
I think this is some kind of parsing bug from the response from solr. 
The number of pairs of errors returned is the same number of hits 
received during the search. So if I do a search with 7 results turned 
up, I get 7 pairs of errors.