Error when installing about akvcam HOT 3 CLOSED

I found the issue. It's a problem with directory containing space. I cloned akvcam in Projects/Open Source/akvcam and it's only reading the Source/akvcam. Notice it's missing "Open ".

I fixed it by removing the space between "Open" and "Source".

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Is kernel 5.11 not supported yet, or?

It is.
The error looks more like you are running make in a different directory, you must:

cd Source/akvcam/src
make

Look at the wiki

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I ran make where the Makefile is located (akvcam/src). Below is the complete output:

make -C /usr/lib/modules/5.11.0-7620-generic/build M=<truncated for brevity>/akvcam/src  modules
make[1]: Entering directory '/usr/src/linux-headers-5.11.0-7620-generic'
make[1]: *** No rule to make target 'Source/akvcam/src'.  Stop.
make[1]: Leaving directory '/usr/src/linux-headers-5.11.0-7620-generic'
make: *** [Makefile:44: all] Error 2

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