Error I keep running in to

An error occurred: error: ActiveRecord::NotNullViolation - PG::NotNullViolation: ERROR: null value in column "source" violates not-null constraint DETAIL: Failing row contains (3216336, 2018-08-07 12:21:16.311918, 507781, 0, null, e22d0ba0580e5ab44bc95ee83ab7fba7, null, s, 760, 1189, 2001:8003:74b4:6700:6df8:23f:86ff:c87e, 1girl alternate_costume antenna_hair arm_behind_head armpits ass..., f, 0, jpg, null, f, null, f, null, '1girl':1 'alternate_costume':2 'antenna_hair':3 'arm_behind_hea..., 72, 1, 1, 1, 581852, f, , , 0, 0, t, f, f, 77, 2018-08-07 12:21:16.311918, f, null, null, f, 2, 2, {"uid":507781}). : INSERT INTO "posts" ("created_at", "uploader_id", "source", "md5", "rating", "image_width", "image_height", "uploader_ip_addr", "tag_string", "file_ext", "tag_count_general", "tag_count_artist", "tag_count_character", "tag_count_copyright", "file_size", "is_pending", "tag_count", "updated_at", "bit_flags", "tag_count_meta", "keeper_data") VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14, $15, $16, $17, $18, $19, $20, $21) RETURNING "id"

This keeps popping up when I try manually uploading an image I have saved on my computer from Fantia, any advice on how I can address this?

Already reported in topic #9127.

Well, apparently it complains that you've left the "source" field blank... which is rather weird, given that there's enough fresh posts under source:none. Are you using vanilla version of the site or some app/userscript?

Type-kun said:

Well, apparently it complains that you've left the "source" field blank... which is rather weird, given that there's enough fresh posts under source:none. Are you using vanilla version of the site or some app/userscript?

I am using the vanilla site and the original untouched link which was originally intended for my upload of https://danbooru.donmai.us/posts/3216528 which I had tagged up with all the failed uploads about an hour or two before this one somehow went through by another person.
You can probably see my upload log if you've got the admin rights.