Trying to add an image to a new product causes a crash

Trying to add an image to a new product causes a crash

Hello,
Longtime I haven't had an issue...
Using Joomla 6.0.3 and a rather old Joomshopping 5.4 because I have heavily modified internals...
Trying to add an image to a new product as I always did, I got this time the following error :
0 imagejpeg(): Argument #3 ($quality) must be at between -1 and 100
Adding Max Error reporting, I could figure that it's happening at line 297 of ImageLib.php but can't figure why.
Tried to add echo $qty before the Imagejpeg call but can't get anything back...
Could you try to let me know where to look for a solution?
Thx
Philippe

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Aw: Trying to add an image to a new product causes a crash

Fixed it temporarily by replacing
imagejpeg($thumb, $name, $qty)
with
imagejpeg($thumb, $name, 85) in ImageLib, but....

Aw: Trying to add an image to a new product causes a crash

See new version
https://github.com/joomshopping/joomshopping/blob/master/site/Lib/ImageLib.php

Aw: Trying to add an image to a new product causes a crash

Thx.
Is this the version included in the latest 5.9?
If ues, tried it with no change.

Aw: Trying to add an image to a new product causes a crash

configuration / Image

Image quality ?

Aw: Trying to add an image to a new product causes a crash

Well, image was, as always, a 72 dpi 450x450 px image (about 110Kb)

Aw: Trying to add an image to a new product causes a crash

Looks like image quality was not evaliuated but can’t figure out why

Aw: Trying to add an image to a new product causes a crash

You didn't answer my question.

configuration / Image
Image quality ?
----------------
Need set 0-100
Example: 80

Aw: Trying to add an image to a new product causes a crash

Don’t know where it’s set. Looked at Config but did not see any param like this in Config.
Never set it anyway…
Remember I’ using sort of a Joomshopping 5.3/5.4

Aw: Trying to add an image to a new product causes a crash

Adminstrator / JoomShopping / Configuration / Image

Aw: Trying to add an image to a new product causes a crash

Interestingly, this was set to 400, which, obviously, doesn't work!
The thing is I never set it to 400...
So, it looks like a non-issue...
Thx for pointing me there...
Cheers
Philippe