Invalid bundle size

[spaceh3ad]

Failed to send bundle on holesky testnet with size of 22572.

info: Bundle size: 22572
error: Error while sending Flashbots bundle: invalid bundle body size {"name":"JsonRpcError: -32000","stack":"JsonRpcError: -32000: invalid bundle body size\n    at MevShareClient.<anonymous> (/Users/j/-simulation/node_modules/@flashbots/mev-share-client/src/client.ts:75:19)\n    at Generator.next (<anonymous>)\n    at fulfilled (/Users/j/Coding/simulation/node_modules/@flashbots/mev-share-client/build/client.js:28:58)\n    at processTicksAndRejections (node:internal/process/task_queues:95:5)"}

Why is that, when max size is 300'000? Also I am only sending about 50 txs.