out of memory on auth.js line 151

I found these error at my error log, i try to identified what is the issue:

Mon Dec 28 07:51:42 2020 bbs.docksud.com.ar
web  0095 !JavaScript  /sbbs/webv4/lib/auth.js line 151: out of memory, Request:
 /index.xjs

Mon Dec 28 08:27:20 2020 bbs.docksud.com.ar
web  0011 !JavaScript  /sbbs/webv4/lib/auth.js line 151: out of memory, Request:
 /index.xjs

Mon Dec 28 08:52:49 2020 bbs.docksud.com.ar
web  0011 !JavaScript  /sbbs/webv4/lib/auth.js line 151: out of memory, Request:
 /index.xjs

Mon Dec 28 11:15:28 2020 bbs.docksud.com.ar
web  0062 !JavaScript  /sbbs/webv4/lib/auth.js line 151: out of memory, Request:
 /index.xjs