Hi @jf-viguier,
Yes, PrestaShop doesn't support SVG.
Your ticket is a duplicate of #10600
So, I close it.
Thanks!
It's not a duplicate of #10600 : I'm talking about blockreassurance module only and it recommend svg format.
@khouloudbelguith The module blockreassurance is supposed to handle SVG (I think)

Just open the block page and see.
@jf-viguier, sorry, it is my fault.
I just re-opened the issue.
@jf-viguier, thanks for these clarifications.
I manage to reproduce the issue with PS1.7.6.1 & PS1.7.5.2 & blockreassurance v4.1.1.
https://drive.google.com/file/d/1BFRYF9iHMztbHnWuoCVK0fNAlSdZ6W1X/view
With blockreassurance v3.0.1, I have other behavior, when I add a new block with svg logo => click on save => redirection to empty page => Configure the module again => OK
https://drive.google.com/file/d/1m7BMEtJTU8Y4aFEtNEGXQRZhtKPzyYx9/view
I鈥檒l add this to the debug roadmap so that it鈥檚 fixed. If you have already fixed it on your end or if you think you can do it, please do send us a pull request!
Thanks!
ping @Progi1984
Fixed in PrestaShop/blockreassurance#35
Thanks @Progi1984
Most helpful comment
@khouloudbelguith The module blockreassurance is supposed to handle SVG (I think)