2.5.1 to 2.6.0 PHP Startup: Unable to load dynamic library 'intl.so'

[kjstech]

Since upgrading pfSense 2.5.1 to 2.6.0, I'm getting this error on the main page and its also prevalent when SSH to the machine:

[20-Feb-2022 05:33:27 UTC] PHP Warning: PHP Startup: Unable to load dynamic library 'intl.so' (tried: /usr/local/lib/php/20190902/intl.so (Shared object "libicuio.so.70" not found, required by "intl.so"), /usr/local/lib/php/20190902/intl.so.so (/usr/local/lib/php/20190902/intl.so.so: invalid file format)) in Unknown on line 0

Things seem to be working ok but the traceroute and ping diag pages in the web ui throw this error:
[20-Feb-2022 00:34:22 EST5EDT] PHP Fatal error: Uncaught Error: Call to undefined function idn_to_utf8() in /usr/local/www/diag_traceroute.php:132
Stack trace:
#0 {main}
thrown in /usr/local/www/diag_traceroute.php on line 132
Fatal error: Uncaught Error: Call to undefined function idn_to_utf8() in /usr/local/www/diag_ping.php:141 Stack trace: #0 {main} thrown in /usr/local/www/diag_ping.php on line 141 PHP ERROR: Type: 1, File: /usr/local/www/diag_ping.php, Line: 141, Message: Uncaught Error: Call to undefined function idn_to_utf8() in /usr/local/www/diag_ping.php:141 Stack trace: #0 {main} thrown

I went to the area where that file is shown and its there but also a 0 kb intl.so.so file with a newer date. Any ideas if thats related to the inability to use ping or traceroute in the web UI?
[2.6.0-RELEASE][root@pfSense.local]/usr/local/lib/php/20190902: ls -lah
total 2343
drwxr-xr-x 2 root wheel 38B Feb 20 00:21 .
drwxr-xr-x 4 root wheel 4B Apr 18 2021 ..
-rw-r--r-- 1 root wheel 38K Jan 12 10:34 bcmath.so
-rw-r--r-- 1 root wheel 22K Jan 12 10:47 bz2.so
-rw-r--r-- 1 root wheel 12K Jan 12 10:44 ctype.so
-rw-r--r-- 1 root wheel 95K Jan 12 10:33 curl.so
-rw-r--r-- 1 root wheel 182K Jan 12 10:29 dom.so
-rw-r--r-- 1 root wheel 43K Jan 12 10:46 filter.so
-rw-r--r-- 1 root wheel 14K Jan 12 10:47 gettext.so
-rw-r--r-- 1 root wheel 453K Jan 12 10:47 intl.so
-rw------- 1 root wheel 0B Feb 20 00:21 intl.so.so
-rw-r--r-- 1 root wheel 43K Jan 12 10:45 json.so
-rw-r--r-- 1 root wheel 88K Jan 12 10:46 ldap.so
-rw-r--r-- 1 root wheel 1.0M Jan 12 10:32 mbstring.so
-rw-r--r-- 1 root wheel 40K Jan 12 10:28 mcrypt.so
-rw-r--r-- 1 root wheel 556K Jan 12 10:44 opcache.so
-rw-r--r-- 1 root wheel 185K Jan 12 10:31 openssl.so
-rw-r--r-- 1 root wheel 32K Jan 12 10:38 pcntl.so
-rw-r--r-- 1 root wheel 105K Jan 12 10:32 pdo.so
-rw-r--r-- 1 root wheel 27K Jan 12 11:18 pdo_sqlite.so
-rw-r--r-- 1 root wheel 115K Jan 12 10:45 pfSense.so
-rw-r--r-- 1 root wheel 33K Jan 12 10:48 posix.so
-rw-r--r-- 1 root wheel 49K Jan 12 10:33 radius.so
-rw-r--r-- 1 root wheel 31K Jan 12 10:46 readline.so
-rw-r--r-- 1 root wheel 32K Jan 12 10:29 rrd.so
-rw-r--r-- 1 root wheel 93K Jan 12 10:38 session.so
-rw-r--r-- 1 root wheel 11K Jan 12 10:48 shmop.so
-rw-r--r-- 1 root wheel 56K Jan 12 10:42 simplexml.so
-rw-r--r-- 1 root wheel 90K Jan 12 10:47 sockets.so
-rw-r--r-- 1 root wheel 52K Jan 12 11:18 sqlite3.so
-rw-r--r-- 1 root wheel 15K Jan 12 10:46 sysvmsg.so
-rw-r--r-- 1 root wheel 9.8K Jan 12 10:40 sysvsem.so
-rw-r--r-- 1 root wheel 13K Jan 12 10:38 sysvshm.so
-rw-r--r-- 1 root wheel 21K Jan 12 10:29 tokenizer.so
-rw-r--r-- 1 root wheel 51K Jan 12 10:26 xml.so
-rw-r--r-- 1 root wheel 32K Jan 12 10:40 xmlreader.so
-rw-r--r-- 1 root wheel 46K Jan 12 10:43 xmlwriter.so
-rw-r--r-- 1 root wheel 47K Jan 12 10:26 zlib.so

[kjstech]

I found another thread, same issue with someone who went from 2.5.1 to 2.5.2. They did this so I gave it a shot. So far so good and the ping and traceroute web pages work again....

pkg unlock icu
pkg delete -f icu
pkg install -yf icu

I remember now I had pkg icu locked becuase it had issues with running Ubiquiti Unifi on pfSense. I can still hit the unifi page on port 8443 so it seems that upgrading from icu: 69.1,1 to icu: 70.1_1,1 is still allowing unifi to work alongside pfSense.