Root composer.json requires web3p/web3.php dev-master -> satisfiable by web3p/web3.php[dev-master].
web3p/web3.php dev-master requires phpseclib/phpseclib ~2.0.30 -> found phpseclib/phpseclib[2.0.30, ..., 2.0.x-dev] but the package is fixed to 3.0.14 (lock file version) by a partial update and that version does not match. Make sure you list it as an argument for the update command.
Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.
Problem 1
Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.