The api is returning incorrect urls for some preview images

<post height="1273" score="1" file_url="safebooru.org/images/2880...36900101ba95387.png" parent_id="" sample_url="safebooru.org/images/2880...36900101ba95387.png" sample_width="900" sample_height="1273" preview_url="safebooru.org/thumbnails/...36900101ba95387.png" rating="s" tags=" 3girls :d advertising_satire animal_print bell blonde_hair blue_gloves blue_headwear bottle breasts carrot cow_print dragon_girl dragon_horns dragon_tail eyebrows_visible_through_hair food fruit gloves hat highres horns kanna_kamui kobayashi-san_chi_no_maidragon kobayashi_(maidragon) large_breasts long_hair looking_at_another looking_at_viewer looking_up maid_headdress milk milk_bottle multiple_girls open_mouth pitchfork red_eyes redhead salad slit_pupils smile straw_hat tail tooru_(maidragon) yuriwhale " id="3000628" width="900" change="1580778837" md5="64bb928339efbc09b39db527e10221a2" creator_id="168" has_children="false" created_at="Mon Feb 03 21:00:33 +0000 2020" status="active" source="i.pximg.net/img-original/.../29/71164648_p0.png" has_notes="false" has_comments="false" preview_width="106" preview_height="150"/>

This preview url safebooru.org/thumbnails/...48c42936900101ba95387.png 404s because the actual preview is a jpg at safebooru.org/thumbnails/...48c42936900101ba95387.jpg


It is quite common on an api search for "kanna_kamui" about 20/50 preview urls are 404ing