Ubuntu 20.04 - apt update error: File has unexpected size

[ewojc]

Hello, I was trying to update repositories via apt/apt-get/aptitude tool but I'm receiving error message for https://ppa.javinator9889.com repos.
Also I was tried to "autoclean"/"clean" and manually removing repos but it doesn't help:
commands:

apt-get clean
apt-get autoclean
sudo rm -rv /var/lib/apt/lists/*

output:

Err:23 https://ppa.javinator9889.com all/main amd64 Packages                                        
  File has unexpected size (790 != 788). Mirror sync in progress? [IP: 188.114.97.9 443]
  Hashes of expected file:
   - Filesize:788 [weak]
   - SHA256:1e481163247828041cb2291dcf3756dee3fd0626e09da4a0117a7f12818a5ae8
   - SHA1:2aea89c2306561d014caa1fc742b085aa8994fc7 [weak]
   - MD5Sum:2a4f8ce4d6522fc54f957dbbc9ee9354 [weak]
  Release file created at: Thu, 27 Oct 2022 08:37:11 +0000
.
.
.
E: Failed to fetch https://ppa.javinator9889.com/dists/all/main/binary-amd64/Packages.gz  File has unexpected size (790 != 788). Mirror sync in progress? [IP: 188.114.97.9 443]
   Hashes of expected file:
    - Filesize:788 [weak]
    - SHA256:1e481163247828041cb2291dcf3756dee3fd0626e09da4a0117a7f12818a5ae8
    - SHA1:2aea89c2306561d014caa1fc742b085aa8994fc7 [weak]
    - MD5Sum:2a4f8ce4d6522fc54f957dbbc9ee9354 [weak]
   Release file created at: Thu, 27 Oct 2022 08:37:11 +0000
E: Some index files failed to download. They have been ignored, or old ones used instead.

specs:

--------------- 
OS: Ubuntu 20.04.5 LTS x86_64 
Host: HP EliteBook 850 G8 Notebook PC 
Kernel: 5.15.0-48-generic 
Uptime: 22 mins 
Packages: 2098 (dpkg), 19 (snap) 
Shell: bash 5.0.17 
Resolution: 1920x1080, 2560x1440 
WM: Mutter 
WM Theme: Adwaita 
Theme: Adwaita [GTK3] 
Icons: Adwaita [GTK3] 
Terminal: guake 
CPU: 11th Gen Intel i7-1165G7 (8) @ 4.700GHz 
GPU: Intel Device 9a49 
Memory: 3887MiB / 15684MiB 

[Javinator9889]

As you can read, the PPA is syncing... Wait for a while and try again (and look for the issue before opening a new one, because some time ago another user said the same... See #9)