When I try to install the latest version of Slippipedia (2.1), I open the .dmg installation file, a window appears (see image) but there is no 'Applications' folder icon in the window, so I can't drag and drop the app into it.
Additionally, when I double-click the Slippipedia icon, I get an error message from macOS saying:
'Apple cannot verify that "Slippipedia.app" is free from malware that may harm your Mac or compromise your privacy.'
Does anyone know how to fix this?
windows of .dmg file :

error message (in french) :

When I try to install the latest version of Slippipedia (2.1), I open the .dmg installation file, a window appears (see image) but there is no 'Applications' folder icon in the window, so I can't drag and drop the app into it.
Additionally, when I double-click the Slippipedia icon, I get an error message from macOS saying:
'Apple cannot verify that "Slippipedia.app" is free from malware that may harm your Mac or compromise your privacy.'
Does anyone know how to fix this?
windows of .dmg file :

error message (in french) :
