Errors/Chain errors
ContributionTooLow
Check the argument values against the operation schema
The amount passed to contribute is below the crowdloan's configured minimum contribution. Check the min_contribution field of the Crowdloans entry for the crowdloan_id and contribute at least that amount.
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 ContributionTooLow.