An error message suddenly appeared in device messages:
Failed to receive a message: Failed to load just created webxdc instance: Message Msg#17977 does not exist. Core version v2.48.0. Please report this bug to delta@merlinux.eu or https://support.delta.chat/.
Delta Chat version
Core version v2.48.0.
Happens on Desktop as well as Android.
Expected behavior
I expect no error to appear
Actual behavior
Device message shows the following new message:
Failed to receive a message: Failed to load just created webxdc instance:
Message Msg#17977 does not exist. Core version v2.48.0.
and it asks to post this here.
Steps to reproduce the problem
- open delta chat
- find the error as new message in Device messages
Debug logs
Logs
2026-04-12T17:33:57.276Z core/event INFO "" 11 "src/receive_imf.rs:520: Receiving message \"0c0c88cd-0f4f-4bef-bb86-1610e9e23a05@localhost\", seen=false..."
2026-04-12T17:33:57.277Z core/event INFO "" 11 "src/receive_imf.rs:1446: Encrypted group message. Chat assignment = GroupChat { grpid: \"XXXXXXXXXXX\" }."
2026-04-12T17:33:57.293Z core/event INFO "" 11 "src/receive_imf.rs:2362: Message has 1 parts and is assigned to chat #Chat#150, timestamp=1776014590."
2026-04-12T17:33:57.295Z core/event INFO "" 11 "src/imap.rs:1409: Passing message UID 9835 to receive_imf()."
2026-04-12T17:33:57.354Z core/event INFO "" 11 "src/receive_imf.rs:520: Receiving message \"f7e89baa-2358-47ea-9dd6-e590bfa18123@localhost\", seen=false..."
2026-04-12T17:33:57.354Z core/event INFO "" 11 "src/receive_imf.rs:1446: Encrypted group message. Chat assignment = GroupChat { grpid: \"XXXXXXXXXXX\" }."
2026-04-12T17:33:57.370Z core/event INFO "" 11 "src/receive_imf.rs:2362: Message has 1 parts and is assigned to chat #Chat#150, timestamp=1776014886."
2026-04-12T17:33:57.370Z core/event INFO "" 11 "src/contact.rs:2157: Recently seen loop waiting for 0h 4m 9s or interrupt"
2026-04-12T17:33:57.370Z core/event INFO "" 11 "src/imap.rs:1454: Successfully received 157 UIDs."
2026-04-12T17:33:57.370Z core/event INFO "" 11 "src/imap.rs:810: 159 mails read from \"INBOX\"."
2026-04-12T17:33:57.370Z core/event INFO "" 11 "src/imap.rs:819: available_post_msgs: 2, download_later: 2."
2026-04-12T17:33:57.376Z core/event INFO "" 11 "src/download.rs:202: Downloading message INBOX/9706 fully..."
2026-04-12T17:33:57.376Z core/event INFO "" 11 "src/imap.rs:1319: Starting UID FETCH of message set \"9706\"."
2026-04-12T17:33:58.048Z core/event INFO "" 11 "src/imap.rs:1409: Passing message UID 9706 to receive_imf()."
2026-04-12T17:33:58.201Z core/event INFO "" 11 "src/mimeparser.rs:1603: added blobfile: \"$BLOBDIR/4458XXXXXXXXXXXXXXXXXXXXXXXXXXX.xdc\""
2026-04-12T17:33:58.203Z core/event INFO "" 11 "src/receive_imf.rs:520: Receiving message \"4571870c-cb3d-432e-9b41-1dbf7a31b471@localhost\", seen=false..."
2026-04-12T17:33:58.203Z core/event INFO "" 11 "src/receive_imf.rs:1287: Message 4571870c-cb3d-432e-9b41-1dbf7a31b471@localhost is a post-message (pre-message exists already, so trash after replacing attachment)."
2026-04-12T17:33:58.205Z core/event WARNING "" 11 "src/receive_imf.rs:2505: handle_post_message: 4571870c-cb3d-432e-9b41-1dbf7a31b471@localhost: Pre-message was not downloaded yet so treat as normal message."
2026-04-12T17:33:58.207Z core/event INFO "" 11 "src/receive_imf.rs:2362: Message has 1 parts and is assigned to chat #Chat#Trash, timestamp=1775960014."
2026-04-12T17:33:58.207Z core/event WARNING "" 11 "src/imap.rs:1416: receive_imf error: Failed to load just created webxdc instance: Message Msg#17977 does not exist."
2026-04-12T17:33:58.207Z core/event INFO "" 11 "src/imap.rs:1454: Successfully received 1 UIDs."
2026-04-12T17:33:58.207Z core/event INFO "" 11 "src/download.rs:202: Downloading message INBOX/9768 fully..."
2026-04-12T17:33:58.207Z core/event INFO "" 11 "src/imap.rs:1319: Starting UID FETCH of message set \"9768\"."
2026-04-12T17:33:58.830Z core/event INFO "" 11 "src/imap.rs:1409: Passing message UID 9768 to receive_imf()."
2026-04-12T17:33:58.943Z core/event INFO "" 11 "src/mimeparser.rs:1603: added blobfile: \"$BLOBDIR/0c3aXXXXXXXXXXXXXXXXXXXXXXXXXXX.png\""
2026-04-12T17:33:58.945Z core/event INFO "" 11 "src/receive_imf.rs:520: Receiving message \"95617269-6c18-478c-8205-a74da9bfcb41@localhost\", seen=true..."
2026-04-12T17:33:58.945Z core/event INFO "" 11 "src/receive_imf.rs:1287: Message 95617269-6c18-478c-8205-a74da9bfcb41@localhost is a post-message (pre-message exists already, so trash after replacing attachment)."
2026-04-12T17:33:58.949Z core/event INFO "" 11 "src/receive_imf.rs:2362: Message has 1 parts and is assigned to chat #Chat#Trash, timestamp=1775960014."
2026-04-12T17:33:58.949Z core/event INFO "" 11 "src/imap.rs:1454: Successfully received 1 UIDs."
2026-04-12T17:33:59.033Z core/event INFO "" 11 "src/imap/idle.rs:47: Transport 1: Skip IDLE in \"INBOX\" because we got interrupt."
2026-04-12T17:33:59.033Z core/event INFO "" 11 "src/sql.rs:944: Start housekeeping..."
2026-04-12T17:33:59.035Z core/event INFO "" 11 "src/sql.rs:1005: 301 files in use."
2026-04-12T17:33:59.035Z core/event INFO "" 11 "src/sql.rs:1065: Housekeeping: Keeping new unreferenced file #1: \"4458XXXXXXXXXXXXXXXXXXXXXXXXXXX.xdc\"."
2026-04-12T17:33:59.040Z core/event INFO "" 11 "src/sql.rs:780: Incremental vacuum freed 0 pages."
2026-04-12T17:33:59.058Z core/event INFO "" 11 "src/sql.rs:687: wal_checkpoint: Total time: 18.405514ms. Writers blocked for: 1.625881ms. Readers blocked for: 1.479908ms."
2026-04-12T17:33:59.065Z core/event INFO "" 11 "src/sql.rs:912: Housekeeping done."
2026-04-12T17:33:59.101Z core/event INFO "" 11 "src/imap.rs:1162: Marked messages 9708:9715,9719:9727,9729:9737,9739:9755,9757:9766,9776,9784:9785,9788:9792,9802,9807:9823 in folder INBOX as seen."
2026-04-12T17:33:59.103Z core/event INFO "" 11 "src/imap.rs:576: Transport 1: No new emails in folder \"INBOX\"."
2026-04-12T17:33:59.150Z core/event INFO "" 11 "src/imap/select_folder.rs:41: Expunge messages in \"INBOX\"."
2026-04-12T17:33:59.186Z core/event INFO "" 11 "src/imap/select_folder.rs:44: Close/expunge succeeded."
2026-04-12T17:33:59.234Z core/event INFO "" 11 "src/imap/select_folder.rs:82: Transport 1: Selected folder \"INBOX\"."
2026-04-12T17:33:59.311Z core/event INFO "" 11 "src/imap/idle.rs:67: Transport 1: IDLE entering wait-on-remote state in folder \"INBOX\"."