Internal Server Error on version 1.5.3

[Yves89000]

Good morning,

I installed version 1.5.3 (for php5 version). I can send emails, there is no problem with that.

However, I cannot access the inbox folder. I have an error that appears at the bottom right "Internal Server Error"

I use dovecot and I have in my config file:
$config['default_host'] = 'localhost';
$config['default_port'] = 143;
$config['imap_auth_type'] = null;

I use the same information as another server under php 7.3 and webmail 1.6.1 which works for him. The configuration of emails is identical...

So I don't understand what's going on. Do you have an idea ?

Here are my logs in var/log/mail.log

Apr 7 09:41:15 ns1 dovecot: imap(contact@XXXXXX)<8751><mFViJrr41tR/AAAB>: Logged out in=82 out=1133 deleted=0 expunged=0 trashed=0 hdr_count=0 hdr_bytes=0 body_count= 0 body_bytes=0
Apr 7 09:41:15 ns1 dovecot: imap(contact@XXXXX)<8750><S0ZiJrr40tR/AAAB>: Logged out in=373 out=15399 deleted=0 expunged=0 trashed=0 hdr_count=27 hdr_bytes=8100 body_count= 0 body_bytes=0

thanks in advance for your help !

[Yves89000]

Ah and if it can help, I can see the number of emails in the reception box at the top left!

I just can't access them and read them

[Yves89000]

after much research it seems to come from this concern: https://www.roundcubeforum.net/index.php?topic=29678.0

I just solved