MediaWiki:Apierror-baddiffto
$1diffto must be set to a non-negative number, prev, next or cur.
Whoops! The default skin for your wiki, defined in $wgDefaultSkin as SkinMinerva, is not available.
Your installation seems to include the following skins. See Manual: Skin configuration for information how to enable them and choose the default.
cologneblue / CologneBlue (enabled)minervaneue / MinervaNeue (disabled)modern / Modern (enabled)monobook / MonoBook (enabled)timeless / Timeless (disabled)vector / Vector (enabled)chameleon / chameleon (enabled)skins/ directory from it.LocalSettings.php to enable all installed skins:wfLoadSkin( 'MinervaNeue' ); wfLoadSkin( 'Timeless' );
LocalSettings.php$1diffto must be set to a non-negative number, prev, next or cur.