NotReadyToDissolve

dissolve was called while outside contributions remain: the crowdloan's raised amount still exceeds the creator's own contribution. Call refund until only the creator's Contributions entry remains and equals raised in the Crowdloans record.

Declared by the Crowdloan pallet; it classifies to the semantic code too_early.

Remediation

The required window has not opened yet; wait some blocks and retry

The same explanation is available in the terminal: btcli explain NotReadyToDissolve.