can not follow instance

When i try to follow an instance, i get this in logfile:

Jun 05 21:47:35 fedibikes01 mobilizon[159631]: 21:47:35.942 request_id=F2XbBl750Ba-d1cAAAuB user_id=1 actor_name=@USERNAME [warning] Failed to send Sentry event. Cannot send Sentry event because of invalid DSN     
Jun 05 21:47:35 fedibikes01 mobilizon[159631]: 21:47:35.943 [error] #PID<0.5139.0> running Mobilizon.Web.Endpoint (connection #PID<0.5138.0>, stream id 1) terminated                                              
Jun 05 21:47:35 fedibikes01 mobilizon[159631]: Server: events.fedibikes.social:80 (http)                                                                                                                           
Jun 05 21:47:35 fedibikes01 mobilizon[159631]: Request: POST /api                                                                                                                                                  
Jun 05 21:47:35 fedibikes01 mobilizon[159631]: ** (exit) an exception was raised:                                                                                                                                  
Jun 05 21:47:35 fedibikes01 mobilizon[159631]:     ** (ArgumentError) argument error                                                                                                                               
Jun 05 21:47:35 fedibikes01 mobilizon[159631]:         (public_key 1.13.1) public_key.erl:834: :public_key.sign("(request-target): get /relay\ndate: Mon, 05 Jun 2023 19:47:35 GMT\nhost: termine.social", :sha256,
 {:RSAPublicKey, 28884062734870434215439838749164103857234051493429551756910943221670470848628317247815730495543189131560841014461697227666504053844875506139921403756515253146192253939414992414303297212685393829
9211486146310356829006011697074246072435857152315855743237016967064230705939242989016343198056006198775945757363627474001505159361091031424883981587875191797102910872705299592056827074476494315718833058144371532
0054824617592662880085984766360195121085587762684304386223448586277081736785720804651265831289455887695118757082412955125154115616080646847090087367144452081151464179093742114034436471138300497621364504687208370
3, 65537}, [])                                                                                                                                                                                                     
Jun 05 21:47:35 fedibikes01 mobilizon[159631]:         (http_signatures 0.1.1) lib/http_signatures/http_signatures.ex:84: HTTPSignatures.sign/3                                                                    
Jun 05 21:47:35 fedibikes01 mobilizon[159631]:         (mobilizon 3.1.1) lib/federation/activity_pub/utils.ex:702: Mobilizon.Federation.ActivityPub.Utils.make_signature/3                                         
Jun 05 21:47:35 fedibikes01 mobilizon[159631]:         (mobilizon 3.1.1) lib/federation/activity_pub/utils.ex:718: Mobilizon.Federation.ActivityPub.Utils.sign_fetch/5                                             
Jun 05 21:47:35 fedibikes01 mobilizon[159631]:         (mobilizon 3.1.1) lib/federation/activity_pub/fetcher.ex:31: Mobilizon.Federation.ActivityPub.Fetcher.fetch/2                                               
Jun 05 21:47:35 fedibikes01 mobilizon[159631]:         (mobilizon 3.1.1) lib/federation/activity_pub/fetcher.ex:132: Mobilizon.Federation.ActivityPub.Fetcher.fetch_and_prepare_actor_from_url/2                   
Jun 05 21:47:35 fedibikes01 mobilizon[159631]:         (mobilizon 3.1.1) lib/federation/activity_pub/actor.ex:65: Mobilizon.Federation.ActivityPub.Actor.make_actor_from_url/2                                     
Jun 05 21:47:35 fedibikes01 mobilizon[159631]:         (mobilizon 3.1.1) lib/federation/activity_pub/actor.ex:36: Mobilizon.Federation.ActivityPub.Actor.get_or_fetch_actor_by_url/2