"$1" is not a file.
MediaWiki:Apiwarn-notfile/en
File $1 is not defined.
MediaWiki:Externaldata-undefined-file/en
The uploaded file is not a valid TIFF file.
MediaWiki:Tiff invalid file/en
File selection is not supported
MediaWiki:Ooui-selectfile-not-supported/en
"$1" is not a number.
MediaWiki:Smw nofloat/en
"$1" is not a category.
MediaWiki:Apiwarn-invalidcategory/en
This file type is not supported.
MediaWiki:Bs-filesystemhelper-upload-unsupported-type/en
This file type is not supported.
MediaWiki:Bs-player-unsupported-type/en
$1 is not a LiquidThreads page
MediaWiki:Lqt-not-a-liquidthreads-page/en
"$1" is not a valid title
MediaWiki:Mediafunctions-invalid-title/en
Page "$1" is not a translation
MediaWiki:Mlm-error-title-isnottranslation/en
'''$1''' is not a valid form.
MediaWiki:Pf autoedit invalidform/en
Error! $1 is not a number.
MediaWiki:Admanager zonenotnumber/en
"$1" is not a translatable message
MediaWiki:Translate-translations-no-message/en
"$1" is not a valid site.
MediaWiki:Massmessage-parse-badurl/en
'$1' is not a recognized project.
MediaWiki:Readinglists-db-error-no-such-project/en
$1 is not a valid parameter.
MediaWiki:Validator error unknown argument/en
"$1" is not a valid title.
MediaWiki:Apiwarn-invalidtitle/en
"$1" is not a valid title
MediaWiki:Workflows-property-validator-valid-title-error/en
Not a valid file key.
MediaWiki:Apierror-invalid-file-key/en
$1 is not a directory or is missing.
MediaWiki:Externaldata-not-a-directory/en
File $1 not found.
MediaWiki:Geogebra-file-not-found/en
File "$1" not found
MediaWiki:Wikistories-file-not-found/en
File not found: $1.
MediaWiki:Fileimporter-api-file-notfound/en
File ($1) not found
MediaWiki:Html2wiki filenotfound/en