Can't create new buttons

Problem/Motivation

Appears when creating a new button, specifically uploading an svg there is a fatal error

Drupal\Component\Plugin\Exception\PluginNotFoundException: The "file_validate_extensions" plugin does not exist. Valid plugin IDs for Drupal\Core\Validation\ConstraintManager are: Callback, Blank, NotBlank, Email, Choice, Image, BlockContentEntityChanged, CKEditor5MediaAndFilterSettingsInSync, SourceEditingPreventSelfXssConstraint, CKEditor5ToolbarItem, CKEditor5FundamentalCompatibility, CKEditor5ToolbarItemDependencyConstraint, SourceEditingRedundantTags, UniqueLabelInList, CKEditor5EnabledConfigurablePlugins, StyleSensibleElement, CKEditor5Element, CKEditor5ToolbarItemConditionsMet, CommentName, DateTimeFormat, FileSizeLimit, FileNameLength, FileImageDimensions, FileValidation, FileExtension, FileIsImage, FileUriUnique, FileExtensionSecure, LinkNotExistingInternal, LinkAccess, LinkExternalProtocols, LinkType, MediaMappingsConstraint, oembed_resource, MenuTreeHierarchy, MenuSettings, PathAlias, TaxonomyHierarchy, UserMailUnique, UserName, UserMailRequired, ProtectedUserField, UserNameUnique, ExtensionExists, ExtensionName, ConfigExists, RequiredConfigDependencies, LangcodeRequiredIfTranslatableValues, ImmutableProperties, EntityType, ValidReference, EntityChanged, ReferenceAccess, EntityUntranslatableFields, Bundle, EntityHasField, UniquePathAlias, ValidPath, PluginExists, Range, AllowedValues, FullyValidatable, PrimitiveType, CountryCode, Null, Length, UniqueField, ComplexData, Regex, Count, ValidKeys, Uuid, NotNull, EntityBundleExists in Drupal\Core\Plugin\DefaultPluginManager->doGetDefinition() (line 53 of core/lib/Drupal/Component/Plugin/Discovery/DiscoveryTrait.php).

Steps to reproduce

Try and create a new button
Upload a svg
See error

Proposed resolution

Be able to upload svgs

Remaining tasks

User interface changes

API changes

Data model changes