downloda image issue from LUA script

[aswinlseven]

I cannot download image from LUA script, it seem there is new API update from telegram, this issue happen this month for me August 2021. I used this image ( QR/Text ) download from telegram-cli and process the image with QRscan/Barcode scan and also read the text with tesseract for OCR. and sometimes use telegram-cli for insert my inventory device take a photo from telegram with caption and process by telegram-cli using LUA, why I still use telegram-cli it fastest then telegram bot.

@vysheng

1629263184.639254 error for query 'download part' #6997632093975428096: #400 FILEREF_UPGRADE_NEEDED
*** 1629263184.639317 lua: /root/.telegram-cli/server.lua:1101: bad argument #1 to 'sub' (string expected, got boolean)
*** 1629263184.645329 Notification API_ERROR_UPDATE_UNOFFICIAL_84: Error. Please update your app to the latest version or switch to the official version of Telegram.

thank you

[Paulchen232]

Tell me the lua script or function.

[aswinlseven]

this is some example of mycode,
the image download issue this year, before that it all running good.
I saw ini here same issue kenorb-contrib#34

if msg.media then
if (msg.media.caption == nil ) then
if msg.media.type == "geo" or msg.media.type == "venue" then
--something function
else
--something function
end
elseif (msg.media.caption == #scan ) then
load_photo(msg.id, scan, msg.id)
end
end

function scan(extra,success,result)
if success then
-- get image filename
local img = string.sub(result,31)
-- processing image with linux cli
local process=os.capture('zbarimg -q ' .. img)
--send information from barcode after scan
send_msg(msg.from.print_name, process ,ok_cb,false)
else
print('Error downloading: '..extra)
end
end

[Paulchen232]

And witch line comes "lua: /root/.telegram-cli/server.lua:1101: bad argument #1 to 'sub' (string expected, got boolean)"

[aswinlseven]

I just produce new error like this

[0%Down]> load_photo 18
*** 1629439943.987499 error for query 'download part' #6998391267747319808: #400 FILEREF_UPGRADE_NEEDED
FAIL: 71: RPC_CALL_FAIL 400: FILEREF_UPGRADE_NEEDED
*** 1629439943.989467 Notification API_ERROR_UPDATE_UNOFFICIAL_143: Error. Please update your app to the latest version or switch to the official version of Telegram.
[0%Down]>

so it mean load_photo() function not working anymore

just ignore this error "lua: /root/.telegram-cli/server.lua:1101: bad argument #1 to 'sub' (string expected, got boolean)"