MintCannotFreeze
SPL Token · Custom(16) · 0x10
custom program error: 0x10
What it means
This mint has no freeze authority.
What to do
Freezing is impossible for this token.
Have the transaction that failed with this?
Paste its signature. TxWhy shows the exact instruction and inner call that raised the error, and rebuilds the transaction when the cause is one it can fix (compute limit, expired blockhash, priority fee, stale swap quote).
Code 16 means something else in other programs
Custom codes are private to each program. Check which program actually raised it: it is the innermost failed call, not necessarily the program you called.