Custom error values are not provided

There are some cases where custom errors are initialized without providing their needed values (e.g., here).

Description

Since there are a few custom errors, one should ensure that we use them correctly and provide them with the values they need.

Expected Behavior

Error-values should not be nil.

Actual Behavior

There are quite some cases where errors are initialized with nil values.

Possible Fix

If a custom error is called, one should satisfy the requirements of the error.

Steps to Reproduce

Context

Your Environment

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• Environment name and version (e.g. go v1.16.3 on FreeBSD 13.0-current):
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