Your heap is full
GC_CONCURRENT freed <1K, 14% free 21220K/24455K, paused 6ms+26ms
GC_CONCURRENT : Jumps in because Heap is full 14% free 21220K/24455K After this collection 14% of memory is free. Check the heap usage. paused 6ms+26ms Time taken to collect garbage.
Obviously there is a huge memory leak in your code that you have to fix.
