Error: Object reference not set to an instance of an object

[xama3a]

Good day! tell me who encountered such error :. Screenshots are in the attachment.
I do backup a file server on tape and get Bugs on several files.
The files themselves watched and tested: they are available, read, rights on them exactly the same as on the adjacent files that can be read normally. With what it can be connected?
Veeam Version 8 Update 2
Support ID case #00942845

[foggy]

Alex, screenshots are not available. Am I understanding right that the error occurs while restoring files from tape? What do our engineers say about the issue?

[xama3a]

No, the error occurs while backuping files on tape:

[foggy]

You'd better continue investigating with our engineers, logs investigation is required here.