RL78/L12 I2C communication

Hello everyone,

I have a problem which is probably easy to solve, but I can't figure it out.

I would like to use the code from
RL78/G14 Group
I2C Repeated Start Signal


to my R5F10RLC and upload it via CS+. i want to create a simple i2c communication to send commands to the slave and receive the response afterwards. with one master and one slave.

Now the code keeps getting stuck here (see picture) during depugging and I don't know exactly why.

Maybe one of you can help me.