How to fix the size of boot

hi,
How can to fix below issue, many thanks!

android12_r28/out/target/product/yukawa$ fastboot flash boot boot.img
target reported max download size of 134217728 bytes
|sending ‘boot’ (20944 KB)…
|OKAY [ 1.128s]
|writing ‘boot’…
|FAILED (remote: too large for partition)
|finished. total time: 1.153s