Thank you for providing the log file.
There are some serious things in the configuration, and some manual operations performed by someone in the database are causing problems now.
error is because your appdomain was recycled/restarted. When that happens the
application and the machine key is set to auto, it changes. That affects the
decryption of the info in the url of the resources urls (.axd). Setting up a
fixed machine key will prevent it from ever happening again.
Could you please ensure that there is enough memory for the application pool, and the server is actually configured?
There are missing stored procedures in the database. If you have a backup before the manual operations performed on the database, please restore it. Otherwise you may try to transfer the database as well, or perform upgrade/downgrade to another version of the CMS, so the database integrity could be restored.
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