MQTTfx Invalid Keystore Format

Hello,

I’m following the Device Integration using MQTT guide( /guides/device-sdk/mqtt/#install-and-configure-the-mqtt-client ) and am currently struggling with connecting to MQTTfx using Self Signed Certificates in Keystores. I was following the guide 1to1 even using the same names and MQTTfx version. Yet when I try to connect I get the error message: Invalid Keystore Format.

Do you guys have any idea?