12 files declare their use of FieldTargetBase in Feeds 8.3

Boolean.php in src/Feeds/Target/Boolean.php

ConfigEntityReference.php in src/Feeds/Target/ConfigEntityReference.php

DateTargetBase.php in src/Feeds/Target/DateTargetBase.php

Email.php in src/Feeds/Target/Email.php

EntityReference.php in src/Feeds/Target/EntityReference.php

FeedsItem.php in src/Feeds/Target/FeedsItem.php

Language.php in src/Feeds/Target/Language.php

Link.php in src/Feeds/Target/Link.php

Number.php in src/Feeds/Target/Number.php

Password.php in src/Feeds/Target/Password.php

Path.php in src/Feeds/Target/Path.php

StringTarget.php in src/Feeds/Target/StringTarget.php