Its happening with all image file. I tried with all file names of image. @GirishBedekar, If you want I can share a sample form with you

@gbedekar @GirishBedekar

I have multiple attachment in form, Its working fine when I add both image and pdf in all mimetype. But its failing when only pdf is allowed in some attachment

05.12.2020 15:42:58.493 *WARN* [0:0:0:0:0:0:0:1 [1607163178258] POST /content/forms/af/shell-eco-marathon/phase112test/jcr:content/guideContainer.af.submit.jsp HTTP/1.1] com.day.cq.wcm.core.impl.reference.ContentPolicyReferenceProvider Policy under /libs won't be published: for policy path: /libs/se...

2020-12-05 15:42:58.105 DEBUG [com.shell.sem.core.filters.LoggingFilter] request for /content/forms/af/shell-eco-marathon/phase112test/jcr:content/guideContainer, with selector af.internalsubmit 2020-12-05 15:42:58.105 DEBUG [com.shell.sem.core.filters.LoggingFilter] request for /content/forms/af/sh...

able to submit with only PDF as attachment

@gbedekar @GirishBedekar

I am using image/*, to allow images.

2020-12-03 20:56:16.324 DEBUG [com.shell.sem.core.filters.LoggingFilter] request for /content/forms/af/shell-eco-marathon/phase1/jcr:content/guideContainer, with selector af.submit2020-12-03 20:56:16.324 DEBUG [com.shell.sem.core.filters.LoggingFilter] request for /content/forms/af/shell-eco-maratho...

I am geeting the error while submitting to form data model also