Errors/Chain errors
MinimumContributionTooLow
Check the argument values against the operation schema
The minimum contribution given to create or update_min_contribution is below the chain-wide floor. Check the AbsoluteMinimumContribution pallet constant and raise the min_contribution argument to at least that value.
Declared by the Crowdloan pallet; it classifies to the semantic code invalid_argument.
Remediation
Check the argument values against the operation schema
The same explanation is available in the terminal: btcli explain MinimumContributionTooLow.