channels with mode +l viewed from outside of channel (/mode #channel) crash jbnc

[MRNFN80]

I set mode #music to +l 99, then I did /mode #music (while in the channel), jbnc was fine

I then left, and did /mode #music again and have found that it crashes.

<MODE #music

:irc.t60group.org 324 mrinfinity #music +ntl 99

:irc.t60group.org 329 mrinfinity #music 1590542373

PING :1590610609091.jbnc

<PONG :1590610609091.jbnc

<PART #music

PING :1590610619094.jbnc

<PONG :1590610619094.jbnc

:hacktioneer!hacktionee@toc.bot PRIVMSG #handshake-live :hs1quw3cv4a5qdtfeaqxs0xx3c87hcr5hmwkc0ehef REVEALED a BID of 10 HNS ($1.44) for barnaul

:hacktioneer!hacktionee@toc.bot PRIVMSG #handshake-live :hs1q6t9f2nquqquvm07s7zwpgljfeyzt0en79n5apx REVEALED a BID of 1 HNS ($0.14) for barnaul

:hacktioneer!hacktionee@toc.bot PRIVMSG #handshake-live :hs1qk5ntrketn3lc99fw0mrnah7ksrdlaycd45mpxd REVEALED a BID of 0 HNS ($0.00) for barnaul

:hacktioneer!hacktionee@toc.bot PRIVMSG #handshake-live :hs1qkynuh97epg29hflhefms2tt3yhdfcvp6x76e33 REVEALED a BID of 5.00499 HNS ($0.72) for barnaul

<MODE #music

:irc.t60group.org 324 mrinfinity #music +ntl
/home/ircd/jbnc/bouncer.js:889
curchan.limit=_mode_target[_mode_count];
^

TypeError: Cannot set property 'limit' of undefined
at Socket. (/home/ircd/jbnc/bouncer.js:889:40)
at Socket.emit (events.js:315:20)
at addChunk (_stream_readable.js:302:12)
at readableAddChunk (_stream_readable.js:278:9)
at Socket.Readable.push (_stream_readable.js:217:10)
at TCP.onStreamRead (internal/stream_base_commons.js:186:23)

my irc client sees:
-> irc.t60group.org MODE #music
<- :irc.t60group.org 324 mrinfinity #music +ntl 99
<- :irc.t60group.org 329 mrinfinity #music 1590542373

when I'm in the channel and /mode normally