[imp] error searching body of emails

[Mike Egglestone]

Quoting Ralf Lang <lang at b1-systems.de>:

> Hi,
>
> Am 29.10.2020 um 19:44 schrieb Mike Egglestone:
>> Hello,
>>
>> I receive an error when searching a large mailbox (such as my Trash
>> folder) for a keyword in the body of the emails.
>> This appears on my terminal shell:
>>
>> Broadcast message from systemd-journald at intel (Thu 2020-10-29 10:29:12
>> PDT):
>>
>> HORDE[32307]: [imp] Call to a member function write() on null [pid
>> 32307 on line 4436 of "/usr/share/php/Horde/Imap/Client/Socket.php"]
>>
>> I also receive a red error message in my browser window:
>> "Error communicating with the server"
>>
>> This only seems to happen in a large mailbox with 100's of emails.
>> The error does not happen in smaller mailboxes.
>>
>> Is this a limit to one of my configuration settings?
>>
>> Thanks!
>> Cheers,
>> Mike
>
> I'd like to have a look at this. Can you tell me the exact version
> numbers of your
>
> - php
> - horde/horde base app
> - horde/imp
> - horde/imap_client
>

Running Debian 10.6 with the standard packages.

php 7.3
horde 5.2.20
imp 6.2.22
imap client 2.29.16

FWIW, searching the large mailboxes in Subject, or Recipient etc.  
produces no errors. Just the body.

~Mike