MyBB Community Forums

Hey,
Today I tried to browse in my forum and I got this error:

My forum version is 1.8.22, I read that should I upgrade myBB version in my forum, when I try to upgrade my broad I got many errors, like this:

What is wrong in my forum???

same as : https://community.mybb.com/thread-228593.html !

1] how was forum installed - was it through single click installer at web host control panel ?

2] do you remember installing / upgrading to MyBB 1.8.22

3] run file verification tool from below location. what does it report ?
forum admin panel >> tools & maintenance >> file verification

ignore reported images & ignore files reported from install folder & its sub-folders

Edit: if admin panel login is not working then
contact your web host & ask to enable unserialization functionality
provide them screenshot of error message containing unserialize()

(2020-07-15, 01:07 PM).m. Wrote: [ -> ]same as : https://community.mybb.com/thread-228593.html !

1] how was forum installed - was it through single click installer at web host control panel ?

2] do you remember installing / upgrading to MyBB 1.8.22 

3] run file verification tool from below location. what does it report ?
forum admin panel >> tools & maintenance >> file verification

ignore reported images & ignore files reported from install folder & its sub-folders

Edit: if admin panel login is not working then
contact your web host & ask to enable unserialization functionality
provide them screenshot of error message containing unserialize()

The forum working (i think the host enabled the function ("unserialization") after the function was disabled)
Thanks for the support !

can you reply to above 3 queries - they are still relevant.