A search for content via ScienceDirect/Elsevier leads to a page calling for a search for your own institution. TWL cannot be found in the list there. It looks like the access has expired. Several users reported the problem, see https://de.wikipedia.org/wiki/Wikipedia_Diskussion:Förderung/The_Wikipedia_Library#ScienceDirect/Elsevier

Steps to replicate the issue

• https://wikipedialibrary.wmflabs.org/users/my_library/ -> navigate to ScienceDirect/Elsevier and follow the link to https://www-sciencedirect-com.wikipedialibrary.idm.oclc.org
• search any content
• you end up on the page https://id-elsevier-com.wikipedialibrary.idm.oclc.org/as/authorization.oauth2?platSite=SD%2Fscience&scope=openid%20email%20profile%20els_auth_info%20els_idp_info%20els_idp_analytics_attrs%20els_sa_discover%20urn%3Acom%3Aelsevier%3Aidp%3Apolicy%3Aproduct%3Ainst_assoc&response_type=code&redirect_uri=https%3A%2F%2Fwww.sciencedirect.com%2Fuser%2Fidentity%2Flanding&authType=SINGLE_SIGN_IN&prompt=login&client_id=SDFE-v3&state=retryCounter%3D0%26csrfToken%3D694c0d11-39a1-4533-97e7-c09ad8d607d8%26idpPolicy%3Durn%253Acom%253Aelsevier%253Aidp%253Apolicy%253Aproduct%253Ainst_assoc%26returnUrl%3Dhttps%253A%252F%252Fwww.sciencedirect.com%252Fsearch%253Forigin%253Dhome%2526qs%253Dwikipedia%2526zone%253DqSearch%26prompt%3Dlogin%26cid%3Datp-9450f305-a25e-402f-a6a2-038ea8eeb86a&dgcid=user-inst-login#submit (or something similar, see the screenshot)