i really dont know what happened... on my way back home, i noticed that i somehow couldnt accelerate...

i stopped and checked what could be wrong, i then saw my left rear tire smoking... the left rear caliper jammed while on brake position...

what could have happened there?

i tried bleeding it, but no fluid came out of the screw, tried the main line to the caliper... still no fluid...

what do i do now? i blocked of the line and m running on 3 brakes