Here's the complete log of the attempt
Jun 30 16:06:59 simplesamlphp DEBUG [9f42accd3a] Session: 'lsss-staging' not valid because we are not authenticated.
Jun 30 16:06:59 simplesamlphp DEBUG [9f42accd3a] Saved state: '_50b1df25381560d1f1e07c36eacb3da0caa828550c'
Jun 30 16:07:00 simplesamlphp DEBUG [9f42accd3a] Sending message:
Jun 30 16:07:00 simplesamlphp DEBUG [9f42accd3a] </samlp:AuthnRequest>
Jun 30 16:07:00 simplesamlphp DEBUG [9f42accd3a] Received message:
Jun 30 16:07:00 simplesamlphp DEBUG [9f42accd3a] <samlp:Response xmlns:samlp="urn:oasis:names:tc:SAML:2.0:protocol" ID="_b725356c-2918-42a0-b49a-035953fa9984" Version="2.0" IssueInstant="2021-06-30T14:07:00.009Z" Destination="
https://lsbioweb1.unige.ch/simplesaml/module.php/saml/sp/saml2-acs.php/lsss-staging" Consent="urn:oasis:names:tc:SAML:2.0:consent:unspecified" InResponseTo="_50b1df25381560d1f1e07c36eacb3da0caa828550c">
Jun 30 16:07:00 simplesamlphp DEBUG [9f42accd3a] <samlp:Status>
Jun 30 16:07:00 simplesamlphp DEBUG [9f42accd3a] <samlp:StatusCode Value="urn:oasis:names:tc:SAML:2.0:status:Success"/>
Jun 30 16:07:00 simplesamlphp DEBUG [9f42accd3a] </samlp:Status>
Jun 30 16:07:00 simplesamlphp DEBUG [9f42accd3a] <EncryptedAssertion xmlns="urn:oasis:names:tc:SAML:2.0:assertion">
Jun 30 16:07:00 simplesamlphp DEBUG [9f42accd3a] </e:EncryptionMethod>
Jun 30 16:07:00 simplesamlphp DEBUG [9f42accd3a] <KeyInfo>
Jun 30 16:07:00 simplesamlphp DEBUG [9f42accd3a] <ds:X509IssuerSerial>
Jun 30 16:07:00 simplesamlphp DEBUG [9f42accd3a] <ds:X509IssuerName>E=myemail, CN=
lsbioweb1.unige.ch, OU=BIMOL, O=UNIGE, L=Geneva, S=GE, C=CH</ds:X509IssuerName>
Jun 30 16:07:00 simplesamlphp DEBUG [9f42accd3a] <ds:X509SerialNumber>17296898115108749936</ds:X509SerialNumber>
Jun 30 16:07:00 simplesamlphp DEBUG [9f42accd3a] </ds:X509IssuerSerial>
Jun 30 16:07:00 simplesamlphp DEBUG [9f42accd3a] </ds:X509Data>
Jun 30 16:07:00 simplesamlphp DEBUG [9f42accd3a] </KeyInfo>
Jun 30 16:07:00 simplesamlphp DEBUG [9f42accd3a] <e:CipherData>
Jun 30 16:07:00 simplesamlphp DEBUG [9f42accd3a] <e:CipherValue>wwxgEQxNK4u8v/u1TZ1YKq3UvAoURGZuaRtPr7GiCq3ZSL2ZLKEZE7WaGo3Lykagd8asz2cQX5KviFhXA0Gz9DR+0JvadTrw4+t5fkAj1UzkimSASNdLusmlwalAf3ggBjR6zQJ+1DYQCMisPrZrZfU+bytkz+JJwcHgay+QbW/LtoVA9ynaMswq4D1oMlYrqbdMbc2yURstTUkWOZo2O/iUq+ZWbcq+eZOasxsdrtwnE0VW0ueH1AmUTFgmWuQD7jK8kGNDdONYsCKEDrDoTmfBM179T5zbNtIsaXfqDaWuX8ELTPhFeUUreMgR3vLOBu/wMPgsttHipRZE3FLl0A==</e:CipherValue>
Jun 30 16:07:00 simplesamlphp DEBUG [9f42accd3a] </e:CipherData>
Jun 30 16:07:00 simplesamlphp DEBUG [9f42accd3a] </e:EncryptedKey>
Jun 30 16:07:00 simplesamlphp DEBUG [9f42accd3a] </KeyInfo>
Jun 30 16:07:00 simplesamlphp DEBUG [9f42accd3a] <xenc:CipherData>
Jun 30 16:07:00 simplesamlphp DEBUG [9f42accd3a] <xenc:CipherValue>K7qz3a0jBlL3Kqp7/c6EuBPhYbSu4ini3apHjuBmAe7YGrM27IIY21964WLZPcGTBs3/3tScq98p5OYSrotYYe64ezqwWrIUuOeFEFozOplr/5h7xg0fnE9ob1z1T616FsCX9OXBa4iMQQZoZPc9DdFH2/uioBqTWCkbf7IVk1Di+vk8wPLLn9zuR6hQPVq7rdz8zmrEVNFCyE1zwRkHSJg2I/j2oFg+sjPU8Vyp8fA0r/N/Q4+iefcsAMnHSBVYIvAFfkHhXP6Bio7EnxoLDCwICTOiWUdeO7h/WQFttfLYZ4wMyV9Hgdetj/6H4ffpgBFA3A5trrDIyylY24U4zRMavx0aYOHU7RPZGnsinfSFRkK9fgGZynsoC02Kd+XhiQeY0fGgdUujFzdK7j7UDVMqmZHC3/7RaGL7Dqe/V41K2X8jTqKLDYaMYB96F9bNpWfSE+Ply7zfjt2PVC4+q49VPDaO0t7Fbgb+IW+3tf0sHuK+L/RlYv5CBZGSLSkFPg2cM6aHBww1SNf9IS1DeO3Nqa5DBKDs+E3h1OsgcmGeFZNcKwHqclqP5cWngk7iHfy6nTisZRspTyPffg7/lHUp92fNqX9tlw0CeiXSO2QH3BeEgEufQF1pTlUYudElawWakSfVCEh7J5QQsbAI6Zper+S/J2IeK7iHnBW0fhetrL/AV7Pscsad2KXmySG9y9X6LRYlQjWu3A1tFGMKzFrNdOMbrm1JIXhHX/lwpcHidUB4EZ3I7wry6U7H7EirmEnZoJvFEcVvg9cfTiZkchvx74Jj/RdMG30xeeiHtEbztrKFLlKHoclLEUT97lpodUbv/VqKQyexLZtpGWwZYeQJDjZ2VGRkeHJcsiKQF4pdt3ZxbP8LXOyhLkb4kXYPo1w9QAnyirsSAxx/XT2o0+6eFS4+Ta3PuZ9wSYz51+Qq82gT23Exq+ZgOWbAif8s5TIy6ASVUS/LTogYvs8YqkLxUv0GC87g6us3Ivr7lbL6bIFR4Gt4Y6JPvtFxEui3B7AcGRN48Jlm9J3GIRgOXk0fcIj3/omXwruPorX1GRHO2qklwBeMp6DRbjHHBDerI7MHbpyND3/Shibo+lpIU2SReyHzMtyauqP/Xd7c/otZp5vOavmT6mbXttEM6dyZgpvUJvP7QCQohO9NrC8RZ6mjN+LOt9Nth6OnuG+OTfzfieo6l+qgzuGn0U1H25kUGU0nsaLgEU6g5UeHsCQ4gBvnjy5QhJVch7rHmMu5KU9Rw+rgbFVUka+E50YERn3Yxppe7OJCmMXU+WsY2goJqq/i3rb9Dq4aJBi78RL2DS8wWUmzGG8s/eROl5+iC0Mja2FfnI/hHmgBVmA5YMmRX/GuM8dYJf4kgd13hGFHodZ5c07W9lBHKqCSukWL5JJ2k9lId6hj4di89sF2AOwBoLS6bTY5sB7xsLFjT57PE19ufJUBuCyXHvaihv7VE5c8CDb75Nc5/L4ltwO3yEKSeJCsmaBP/52PtPZq28AQQEywmPEaKVVR4uTmYsQZrnBiq+UldilimvEG8qKC1Xss/svTVaLSwrvujwKXSdNDAzOarWRNVRlaQ/6fHXdymMjTfj/G9IoXyOpzstU8Qwok50sK55kX2M+yT8V/4zx1Vg+sb4vR+QRVVzS8hyIZH+mKo6eP8ew5YnS1l1SddNjDU6QIeTe/oLgMnbCPzD1C5hx93zhoUCzQDqGwogfr49ggjgESbVfDawWkElkd1hC39HYFdEO/2mUiFMFRufUQnIgLIhU8RqaG+qaL4hA7fpdOV9/Kx9R06Z32N6Y64OKn9IO9i0grKpRbYUkhN4aVYTRxblLMQMrV7Lw8QPTJC6v4gknFf9LSMF0aSLrEt7aJmNFCzYhm1r63E9ijd+YPty4q2Ikps17kX+u4vxpCj6GwGeWeRJAHEDcFAjpuhYH/tND7beR1YmzuBvblyAJaGtS6zKMBTlVYa/A4qP4gRfjKshGryeo0DGczp5lIDhEjMaXqNKJNzCu7FJY1/GeDSVHRvOviYfxEWc+lV7IzTOo1FLLjYw6+Bhl6IrtvU32Tel5HwtVKTpRxEOsa8gJS/pTGG9xlC08HkQDBd9gxX7N8Xsw+sY5JFIeQgIf+fnpHCP2nVcFV7g0o+1O4niWG+pFkVwyQIBNjuHIXwrDOOukSzfxJ2R6diHeGK5D8dI99osc/Bt7AuSKeikQr0NeMPGGYRmEzpg1cUJiQN5meDUNU3C6vgb8nhRWGLnCVcYEKeEq/+hd54qCtOBc455HufjmEzkKl9eQ8KlaA+d2a2M0F9im2lWaYHooO6YwDHWZcwx0LpNvu4vHj/TCJ8xotHDCngkW+S2KySSd4OHiYanKr5PCc2BkC8gZzOGDWzB0gOZjTaTdweFjYhFEqiWuohsRYDJZJLAwOvR7yw0Z8q2sMo7M0Ln3jxF59iPN9G1NCoH7KJeYFOT8ViJ0pyyFPaesmmbgI7H0yR6YtqAygEwzArEmdmULTdb1MEcAlLhdw3sl+Uf7kPAFwhoCHz5BB4hCh4pzZcEsi2UxVdVT1/F1j11LfcL4fAqyCYO8aXVIRnpJ1HoHoAaaWW2RL0nPAUyHnXuMYGYYgzJOifpubX4EDHHc1CFsH4tzihglIDxWJNh3lt6g64JzKOm+HsLqI0YBg5D8LHXytNYmtlAKE5KAZ3mq1zwhcUPDjpySPgwe9mcUCxkvKTxEmadypCpE/VyreIAoG41g0BDZTd0JYqmkC+rdcEcE5sqXG2ByjR+UzldgiojEBELiOGNTm+74Jf6/wXm6BQLWW2bPL1TKY5FtdNLJGn1K1IbXhG4fdbXUugDgoDHhmx+qUBlbyKjicvvXQHem51x4vYw9XGMr8HQhh9S6zu5tc97KInFENw72Ng8czvzPx6QbFf4L1aD8WQg+Ud7h4nNRCof2OYE8fITqGRDax9PkFrL1lp4JVi7Ly3h3wp7C3OVZGONvB902cQmwGSdTL6Amgfee40mcy6wzHOyYzfd0OZiCHAdiVMh1FeirQQqF7hbdkrfBsvJJyoqFTR9/MpQbhwVF+FxeGXaAxp04dM5VRl9/bdZkRCn7dfAMNCQEPO0R9D5SPCeMcZ7oaK9qTaTStCxwsjFXQ6Us8F4sRUQC6LgFP7/Tb/ApBspNcvtzeP1qmTWpQAdeKlJvXbLKFSM7xAmHYIgUgKF1AExKTNaxi3NzXHraU+L8cjCex8WYLJ73yraVWD5FiHkv2q6JVvC3A8l4TvthbXw7VICSNieKSjr1C7UqV3GvElx1tlSF+Seri5wk8VCnmwQOW/x4Vz0MJsRFo8S/SkF/SwVKbSncyJVEAoWdYyGMPC1BEDzdfXBifcIS7Rqx28kRgQd3ykUlJo8omS4Di79f5Qm+lPRg5O1fU3yKHP+9g7xtgHTFon+eHXWX19CGlRP19xaGsRMsUFXogZOj9kb2Kl2JfoZkXY/IP7byBz+F0pqhFmL7I43asojPCLaCVfOIt7G0UuiGl1UUBwH2OYwCQMCWYmbAZteVr49ShCJRtLAaaVcNJHDbhBKjCxt6F87YPzn6oSbIWWxW1DkRQxjUJK9eALVLL7dLRo9VAUN7Q6ZeXG/qHvY+SZIadiZ3Hb84DmibBNjNSjb/B5xGtGt+EgClo7oQWF66TMcMlp1Y5Gjiw7VUFqjAjhvTZLCHPHEC+MjbOxUhq5zQbmIxlQKS61Zaoyh4I90IyN+RUkZZx0l7++pq6vvLT7Ac4+7PZiLdSYVLEuEc/JHcpp1DmTXkzQiMCFcb0Df5iEFIUswcvzb2th15iF5CtGW4abVRo/3uWYRTh8MlMM6e121sVbHiFuVOZqUGZPPemfF78IRoz6V9QD9kuJTSXYLSFlXNgOiowambjO/2oTIQxtbWMifsjX9gq/B6b2SVEhX7uk4FyoMmwS6Y9ATQgU/P6w2/zdafZy5th4aK93wi7GgGwXZnqKQsD23LudEPmZeyAIDPBure3bk94Ov3pd4OL4AHmlO4nokMYu6qttnkIjw0pb1zxykIR/mDyI+pPykLyq2gwAguskkjc9rDwR5mDJ5Rnau2xHrBshzUBBjowFmEB2WIN3CCC7b2r41e29QhVL5x59Vel2KRohm4JAsMSv/Mo7d58i8S1siXUw8DdgyBPmN4LZatsgABed3fHocqLoTIt1gQXmEheT49wlll3SgSoVLYrPTL4FbqytCJfyH2StwIFJWQ7HVgyMFtuDq4otg4NbilGPXxrKOu2PpYidWVMd7PMRtMS7od64wrh319hrJXPmBaV8mwk5fw98k52fD3Qa7Z4lQ/9rb034dzCtpiJuxPCOUS8YsI0nIeFjqeAzhWTWtC1fTfE4uO8G4WqXu6OM9MafhckgkJe7QcAFOY7/ed1vTNm0PA/18DG3izquzxZDgXD7yKKziV14LnRYOsDQ7Q9GhCsXhc370Yh9NZlQAuW2v9/mfAk0v+VDWaeGMV//tVBVJARPLPQ6mItK9lpw8ybRJIcaKngmrk7To7QjUcCqWjVf21U8a+/Pzom+ArSX1Cu4TH6hQmQZYI9GR5fhb/O1KA8P445n/QVZtvl8knxqg/vPWLFGcyxBXswX1P1fkvciVMO0o1FRryvBn7QWpEt2ROWus898HKW6S9ruTpxxQcqY3lE85PyVlqDHv/GgH78aJ9czzBNGTCCEPY2wyuilkgFEtfHrfHOkzxbXGSqSu0riILqWTMe09yImyGZM8ehU2mXIHG2MYZzlb6hiQERqxWVjXaRVHlXGhS3c0T0nmDsV+98GkaBBhvaiBaVcgEUT0cl1PnLNUgWyVy5XmZWJQANp2DcEt8XaVKY4/YGVsLpnQy0mN/nmwBaEpCRrlbROw6c1KQOIfQnJ0Bwu3gVTENlph1ucO3AK1QHGEgMB+htN6wmao8uE11G8HGkNXfofgFiSNHrIZCQ1lMX6jzfAVPqTZydV0ePC+/mCHs+pTqzwLSr7CKUYF9/3DvvnWABMItN2lFf+eQspxDjuZu2yKCPJlVhZYi9Nkqq6MO53EAkOrYSnvwXtZjKywHR83Xpni9/RzIRtEJiBChcAXVJsrA2uA13v82nWKXZh0ibZcYhvK/Kmqlp0ezHTwcEj1j1H43Uqc2leRJW+RuFsLZvo4ux/Mjlzjb+n8cPqzBYyKF4v8fe5O9lf5qHgQiVIhtZ1/nORtqQ+TAulE+leWBg9t/D+pHtgtrYqJwYoDijiPUMd1LdAga5dCKD83yZBLwgaGvI2NnFzyRA4CJ4609eGgXl5+PZRD2WYOoWRo7BUwXvrSfN/ozuBIqL/S7hxKixXbLyyJ04DB/EI4XfLH5Jsax7BZBun1gmoWRNoODw+sv2s/MFFGF+yC+IQewL1XL4LGDfj1/mY0FSaBfL6XYSgpb+bJ9E8qIYmTF3oVaZFkd1UgyPgCV0NYMDrN5zRNcSvEUH5Hhnc7fyVwNRfr77ltMZXlwL3AseB0r+STkCfoYM6R6pD5I6A75gNJSkckYPaHaeEXdZQJ6Gxnmpy4UOHGv7XTjNzqKtdOM4LIIrcF43Jp/c7uO6F8NsFDE5d1+0Dg9xv+DsQqF+xw2XaQbqUqPAxYXNhgq1ti6SzgDiQ1jMjc/M/RZwdLI/DITnVx3iBMQ+8Xc562EjbS+o6hLpkSmjjSNiEV0KPi2XRbqG6sm3wNiPOZUpWuXSZtAa6eZLoslLL9A89xkkO/FQU7wWbVMdO+CJ4Qum+xtgC2yz1JZ58fxjNGLyKmB9+OTBseSShwPMyVz0Zc66DS6l3pkcJQ8V/kKJvg957/ic8lUubhhIXYQIaAoz9B1iijnfXUeDOsHsfJIdBQBdCIRIF3ZbyCkZ+mEOqPuVnlt7IIQngmmjnmGwfWjk9ePltcFUga9ZFCeij5pEi8HqFhHKqglCfUMfqUxViNrzL0Pi3cVM4YDhdZC5xlNhkR4uwpT+JezD3DWFUMLHjO11hlmdGYe373kPWBfJvHKXIrL/d4cA9MMBEn1OY+iwjMU/mi1p87Au/Y3GH6/iYw1zswtG0TFtab5h4ggISHZv8WG3rW/sxoSE7zxEH1WejstgRVIs3QR9aiSVwKryo8U552CpPDrcwYX5dD7YqeFHHSmOkgcOdNKgQWWcJjn2FOYxHtmv5ZP2qk6SlxFnxwt4NsYtw7mMRxdw8jDms7RPkSZaVzq1qDaXNvklUGwbTozB9sOhmK/wEbaj/36FKOpEj8n3b5EvdaSPz0u2SL6P9ffnWJce83HwdH6iihwJWCRqDqkPFRe8ta7hC1yv+wXOOykCdmjqzJh3l16j7eXjFC3i6Tpktd8DlN1HwwqBcIdTeCtGh6AutSXEh/PeJHzmgpiSkL78upd1QBKy6m//jisw6CptFHhBxQwhRcq9lh1q72xy78FmMEzOKQknTmZzdV5SQEUybMX4YKX/a2FBbY6ficyc2sesLFRjUw9YCCoY1VdF5qbwulq2aPUXDOUh8ugzUQIRXOaSD4+kts5xnuk9HLmbaI/tVybFFEPHe9o/NgvD9ExJ4fnvYGF0GqgXvVw3mrziqMghL7bCqduMax7Br6KyROSOC+BUCllOTyQIdtEl02ZZELrcdi6If/idElcO8bb9SKa++Xk1XtPlHWExckmdnDUEe6ViJza1KwcLDdBhFu1yVfYStVgXd4bBDsNUuQg4CM+wnZ/t3tvIBAnf2Yw4KIO85a3ceYFOI+tyAnWLV72T9ij8fPLO4yuRLmQ5iHdrG+OJ2NIZptoRMaGfDVCmndclbIp/6A5FKKQzUORb</xenc:CipherValue>
Jun 30 16:07:00 simplesamlphp DEBUG [9f42accd3a] </xenc:CipherData>
Jun 30 16:07:00 simplesamlphp DEBUG [9f42accd3a] </xenc:EncryptedData>
Jun 30 16:07:00 simplesamlphp DEBUG [9f42accd3a] </EncryptedAssertion>
Jun 30 16:07:00 simplesamlphp DEBUG [9f42accd3a] </samlp:Response>
Jun 30 16:07:00 simplesamlphp DEBUG [9f42accd3a] Loading state: '_50b1df25381560d1f1e07c36eacb3da0caa828550c'
Jun 30 16:07:00 simplesamlphp DEBUG [9f42accd3a] Has 1 candidate keys for validation.
Jun 30 16:07:00 simplesamlphp ERROR [9f42accd3a] SimpleSAML\Error\Error: UNHANDLEDEXCEPTION
Jun 30 16:07:00 simplesamlphp ERROR [9f42accd3a] Backtrace:
Jun 30 16:07:00 simplesamlphp ERROR [9f42accd3a] 1 /var/simplesamlphp/www/_include.php:17 (SimpleSAML_exception_handler)
Jun 30 16:07:00 simplesamlphp ERROR [9f42accd3a] 0 [builtin] (N/A)
Jun 30 16:07:00 simplesamlphp ERROR [9f42accd3a] Caused by: Exception: Unable to extract public key
Jun 30 16:07:00 simplesamlphp ERROR [9f42accd3a] Backtrace:
Jun 30 16:07:00 simplesamlphp ERROR [9f42accd3a] 5 /var/simplesamlphp/vendor/robrichards/xmlseclibs/src/XMLSecurityKey.php:381 (RobRichards\XMLSecLibs\XMLSecurityKey::loadKey)
Jun 30 16:07:00 simplesamlphp ERROR [9f42accd3a] 4 /var/simplesamlphp/modules/saml/lib/Message.php:226 (SimpleSAML\Module\saml\Message::checkSign)
Jun 30 16:07:00 simplesamlphp ERROR [9f42accd3a] 3 /var/simplesamlphp/modules/saml/lib/Message.php:646 (SimpleSAML\Module\saml\Message::processResponse)
Jun 30 16:07:00 simplesamlphp ERROR [9f42accd3a] 2 /var/simplesamlphp/modules/saml/www/sp/saml2-acs.php:145 (require)
Jun 30 16:07:00 simplesamlphp ERROR [9f42accd3a] 1 /var/simplesamlphp/lib/SimpleSAML/Module.php:266 (SimpleSAML\Module::process)
Jun 30 16:07:00 simplesamlphp ERROR [9f42accd3a] 0 /var/simplesamlphp/www/module.php:10 (N/A)
Jun 30 16:07:00 simplesamlphp ERROR [9f42accd3a] Error report with id 866baf9b generated.
Jun 30 16:07:00 simplesamlphp DEBUG [9f42accd3a] Session: Valid session found with 'admin'.
Jun 30 16:07:00 simplesamlphp DEBUG [9f42accd3a] Localization: using old system
Jun 30 16:07:00 simplesamlphp DEBUG [9f42accd3a] Translate: Reading dictionary [/var/simplesamlphp/dictionaries/errors]