Hello,

Since today, Mumi was found crashing with the following errors in
/var/log/mumi.log:

--8<---------------cut here---------------start------------->8---
2023-09-10 11:49:01 GET GC Warning: Repeated allocation of very large block (appr. size 4194304):
2023-09-10 11:49:01     May lead to memory leak and poor performance
2023-09-10 12:02:37 Throw to key `match-error' with args `("match" "no matching pattern" (HEAD "63641"))'.
2023-09-10 12:06:00 Uncaught exception in fiber ##f:
2023-09-10 12:06:00 In ice-9/boot-9.scm:
2023-09-10 12:06:00   1752:10  5 (with-exception-handler _ _ #:unwind? _ # _)
2023-09-10 12:06:00 In fibers/web/server.scm:
2023-09-10 12:06:00    211:21  4 (_)
2023-09-10 12:06:00 In ice-9/suspendable-ports.scm:
2023-09-10 12:06:00      83:4  3 (write-bytes #<closed: file 7f4efcabc8c0> #vu8(60 33 …) …)
2023-09-10 12:06:00 In unknown file:
2023-09-10 12:06:00            2 (port-write #<closed: file 7f4efcabc8c0> #vu8(60 33 # …) …)
2023-09-10 12:06:00 In ice-9/boot-9.scm:
2023-09-10 12:06:00   1685:16  1 (raise-exception _ #:continuable? _)
2023-09-10 12:06:00   1685:16  0 (raise-exception _ #:continuable? _)
2023-09-10 12:06:00 ice-9/boot-9.scm:1685:16: In procedure raise-exception:
2023-09-10 12:06:00 In procedure fport_write: Broken pipe
2023-09-10 12:15:36 /graphql
--8<---------------cut here---------------end--------------->8---

And also:

--8<---------------cut here---------------start------------->8---
[...]
2023-09-10 22:23:07 ice-9/boot-9.scm:1685:16: In procedure raise-exception:
2023-09-10 22:23:07 In procedure fport_write: Broken pipe
2023-09-10 22:23:07 ice-9/boot-9.scm:1685:16: In procedure raise-exception:
2023-09-10 22:23:07 In procedure fport_write: Broken pipe
2023-09-10 22:23:07 Uncaught exception in fiber ##f:
2023-09-10 22:23:07 In ice-9/boot-9.scm:
2023-09-10 22:23:07   1752:10  5 (with-exception-handler _ _ #:unwind? _ # _)
2023-09-10 22:23:07 In fibers/web/server.scm:
2023-09-10 22:23:07    211:21  4 (_)
2023-09-10 22:23:07 In ice-9/suspendable-ports.scm:
2023-09-10 22:23:07      83:4  3 (write-bytes #<closed: file 7f1caec72d90> #vu8(60 33 …) …)
2023-09-10 22:23:07 In unknown file:
2023-09-10 22:23:07            2 (port-write #<closed: file 7f1caec72d90> #vu8(60 33 # …) …)
2023-09-10 22:23:07 In ice-9/boot-9.scm:
2023-09-10 22:23:07   1685:16  1 (raise-exception _ #:continuable? _)
2023-09-10 22:23:07 Uncaught exception in fiber ##f:
2023-09-10 22:23:07   1685:16  0 (raise-exception _ #:continuable? _)
2023-09-10 22:23:07 In ice-9/boot-9.scm:
2023-09-10 22:23:07   1752:10  5 (with-exception-handler _ _ #:unwind? _ # _)
2023-09-10 22:23:07 In fibers/web/server.scm:
2023-09-10 22:23:07 ice-9/boot-9.scm:1685:16: In procedure raise-exception:
2023-09-10 22:23:07 In procedure fport_write: Broken pipe
2023-09-10 22:23:07    211:21  4 (_)
2023-09-10 22:23:07 In ice-9/suspendable-ports.scm:
2023-09-10 22:23:07      83:4  3 (write-bytes #<closed: file 7f1cb6303e00> #vu8(60 33 …) …)
2023-09-10 22:23:07 In unknown file:
2023-09-10 22:23:07            2 (port-write #<closed: file 7f1cb6303e00> #vu8(60 33 # …) …)
2023-09-10 22:23:07 In ice-9/boot-9.scm:
2023-09-10 22:23:07   1685:16  1 (raise-exception _ #:continuable? _)
2023-09-10 22:23:07   1685:16  0 (raise-exception _ #:continuable? _)
2023-09-10 22:23:07 ice-9/boot-9.scm:1685:16: In procedure raise-exception:
2023-09-10 22:23:07 In procedure fport_write: Broken pipe
2023-09-10 22:23:07 Uncaught exception in fiber ##f:
2023-09-10 22:23:07 In ice-9/boot-9.scm:
2023-09-10 22:23:07   1752:10  5 (with-exception-handler _ _ #:unwind? _ # _)
2023-09-10 22:23:07 In fibers/web/server.scm:
2023-09-10 22:23:07    211:21  4 (_)
2023-09-10 22:23:07 In ice-9/suspendable-ports.scm:
2023-09-10 22:23:07      83:4  3 (write-bytes #<closed: file 7f1cac7101c0> #vu8(60 33 …) …)
2023-09-10 22:23:07 In unknown file:
2023-09-10 22:23:07            2 (port-write #<closed: file 7f1cac7101c0> #vu8(60 33 # …) …)
2023-09-10 22:23:07 In ice-9/boot-9.scm:
2023-09-10 22:23:07   1685:16  1 (raise-exception _ #:continuable? _)
2023-09-10 22:23:07   1685:16  0 (raise-exception _ #:continuable? _)
2023-09-10 22:23:07 ice-9/boot-9.scm:1685:16: In procedure raise-exception:
2023-09-10 22:23:07 In procedure fport_write: Broken pipe
--8<---------------cut here---------------end--------------->8---

I've restarted the 'mumi' service and it's up and running again, for
now.

Attached is the complete mumi log for reference.