Sourcetree no key found - macOS Catalina

[Tal_A]

While I'm trying to set the SourceTree to communicate with a Bitbucket server, I get an SSH Key: "no key found" message.

The SSH key I'm using to connect the Bitbucket server is located both in my SSH agent and Keychain.

I didn't find any updated solution for that for macOS Catalina.

Can you please assist?

Versions:

macOsCatalina 10.15.4

Sourcetree 4.0.1

[Christian Andersson]

Old Issue but not solved...

Same problem with macOS Big Sur and SourceTree 4.1.2

Here is a workaround 
Git from bash uses the keys perfectly, so if I first clone the repos using git in bash and then opens these repositories inside SourceTree, then you can use sourcetree with these repositories. You might need to configure sourcetree to use your local git command instead of the embedded.