Error upon first attempt to convert an image

I installed your plugin and tried to convert one image to understand how it works and what the process for converting more images later is, and as soon as I checked the conversion options (no tweaking though), and then chose an image to try to convert to WebP, I got the following message (pasting the output log with altered file path parent to the wp-content directory – all else unchanged)

WebP Convert 2.9.0 ignited
PHP version: 8.1.27
Server software: nginx/1.24.0

source: {{myPath}}/wp-content/uploads/2024/01/fixedratio_20230725123153_f367e78a-150x200.jpeg
destination: {{myPath}}/wp-content/webp-express/webp-images/doc-root/wp-content/uploads/2024/01/fixedratio_20230725123153_f367e78a-150x200.jpeg.webp

Cwebp converter ignited
Destination folder does not exist. Creating folder: {{myPath}}/wp-content/webp-express/webp-images/doc-root/wp-content/uploads/2024/01

Options:
------------
- encoding: "auto"
- quality: 80
- auto-limit: true
- alpha-quality: 80
- near-lossless: 60
- metadata: "none"
- method: 6
- sharp-yuv: true
- auto-filter: false
- low-memory: false
- preset: "none"
- log-call-arguments: true
- use-nice: true
- try-cwebp: true
- try-discovering-cwebp: true
- try-common-system-paths: true
- try-supplied-binary-for-os: true
- skip-these-precompiled-binaries: ""
- rel-path-to-precompiled-binaries: *****
- command-line-options: ""

Note that these are the resulting options after merging down the "jpeg" and "png" options and any converter-prefixed options

Defaults:
------------
The following options was not set, so using the following defaults:
- size-in-percentage: null (not set)

Encoding is set to auto - converting to both lossless and lossy and selecting the smallest file

Converting to lossy
Looking for cwebp binaries.
Discovering if a plain cwebp call works (to skip this step, disable the "try-cwebp" option)
- Executing: cwebp -version 2>&1. Result: Exec failed (the cwebp binary was not found at path: cwebp, or it had missing library dependencies)
Nope a plain cwebp call does not work (spent 2 ms)
Discovering binaries using "which -a cwebp" command. (to skip this step, disable the "try-discovering-cwebp" option)
Found 0 binaries (spent 18 ms)
Discovering binaries by peeking in common system paths (to skip this step, disable the "try-common-system-paths" option)
Found 0 binaries (spent 25 ms)
Discovering binaries which are distributed with the webp-convert library (to skip this step, disable the "try-supplied-binary-for-os" option)
Checking if we have a supplied precompiled binary for your OS (Linux)... We do. We in fact have 4
Found 4 binaries (spent 1 ms)
- {{myPath}}/wp-content/plugins/webp-express/vendor/rosell-dk/webp-convert/src/Convert/Converters/Binaries/cwebp-120-linux-x86-64
- {{myPath}}/wp-content/plugins/webp-express/vendor/rosell-dk/webp-convert/src/Convert/Converters/Binaries/cwebp-110-linux-x86-64
- {{myPath}}/wp-content/plugins/webp-express/vendor/rosell-dk/webp-convert/src/Convert/Converters/Binaries/cwebp-103-linux-x86-64-static
- {{myPath}}/wp-content/plugins/webp-express/vendor/rosell-dk/webp-convert/src/Convert/Converters/Binaries/cwebp-061-linux-x86-64
Discovering cwebp binaries took: 46 ms

Binaries ordered by version number.
- {{myPath}}/wp-content/plugins/webp-express/vendor/rosell-dk/webp-convert/src/Convert/Converters/Binaries/cwebp-120-linux-x86-64: (version: 1.2.0)
- {{myPath}}/wp-content/plugins/webp-express/vendor/rosell-dk/webp-convert/src/Convert/Converters/Binaries/cwebp-110-linux-x86-64: (version: 1.1.0)
- {{myPath}}/wp-content/plugins/webp-express/vendor/rosell-dk/webp-convert/src/Convert/Converters/Binaries/cwebp-103-linux-x86-64-static: (version: 1.0.3)
- {{myPath}}/wp-content/plugins/webp-express/vendor/rosell-dk/webp-convert/src/Convert/Converters/Binaries/cwebp-061-linux-x86-64: (version: 0.6.1)
Starting conversion, using the first of these. If that should fail, the next will be tried and so on.
Tested "nice" command - it works :)
Checking checksum for supplied binary: {{myPath}}/wp-content/plugins/webp-express/vendor/rosell-dk/webp-convert/src/Convert/Converters/Binaries/cwebp-120-linux-x86-64
Checksum test took: 25 ms
Creating command line options for version: 1.2.0
Running auto-limit
Quality setting: 80.
Quality of jpeg: 82.
Auto-limit result: 80 (no limiting needed this time).
The near-lossless option ignored for lossy
Trying to convert by executing the following command:
nice {{myPath}}/wp-content/plugins/webp-express/vendor/rosell-dk/webp-convert/src/Convert/Converters/Binaries/cwebp-120-linux-x86-64 -metadata none -q 80 -alpha_q '80' -sharp_yuv -m 6 '{{myPath}}/wp-content/uploads/2024/01/fixedratio_20230725123153_f367e78a-150x200.jpeg' -o '{{myPath}}/wp-content/webp-express/webp-images/doc-root/wp-content/uploads/2024/01/fixedratio_20230725123153_f367e78a-150x200.jpeg.webp.lossy.webp' 2>&1

Output:
nice: '{{myPath}}/wp-content/plugins/webp-express/vendor/rosell-dk/webp-convert/src/Convert/Converters/Binaries/cwebp-120-linux-x86-64': Permission denied

Executing cwebp binary took: 4 ms

Exec failed (return code: 126)
Note: You can prevent trying this precompiled binary, by setting the "skip-these-precompiled-binaries" option to "cwebp-120-linux-x86-64"
Checking checksum for supplied binary: {{myPath}}/wp-content/plugins/webp-express/vendor/rosell-dk/webp-convert/src/Convert/Converters/Binaries/cwebp-110-linux-x86-64
Checksum test took: 21 ms
Creating command line options for version: 1.1.0
The near-lossless option ignored for lossy
Trying to convert by executing the following command:
nice {{myPath}}/wp-content/plugins/webp-express/vendor/rosell-dk/webp-convert/src/Convert/Converters/Binaries/cwebp-110-linux-x86-64 -metadata none -q 80 -alpha_q '80' -sharp_yuv -m 6 '{{myPath}}/wp-content/uploads/2024/01/fixedratio_20230725123153_f367e78a-150x200.jpeg' -o '{{myPath}}/wp-content/webp-express/webp-images/doc-root/wp-content/uploads/2024/01/fixedratio_20230725123153_f367e78a-150x200.jpeg.webp.lossy.webp' 2>&1

Output:
nice: '{{myPath}}/wp-content/plugins/webp-express/vendor/rosell-dk/webp-convert/src/Convert/Converters/Binaries/cwebp-110-linux-x86-64': Permission denied

Executing cwebp binary took: 5 ms

Exec failed (return code: 126)
Note: You can prevent trying this precompiled binary, by setting the "skip-these-precompiled-binaries" option to "cwebp-110-linux-x86-64"
Checking checksum for supplied binary: {{myPath}}/wp-content/plugins/webp-express/vendor/rosell-dk/webp-convert/src/Convert/Converters/Binaries/cwebp-103-linux-x86-64-static
Checksum test took: 32 ms
Creating command line options for version: 1.0.3
The near-lossless option ignored for lossy
Trying to convert by executing the following command:
nice {{myPath}}/wp-content/plugins/webp-express/vendor/rosell-dk/webp-convert/src/Convert/Converters/Binaries/cwebp-103-linux-x86-64-static -metadata none -q 80 -alpha_q '80' -sharp_yuv -m 6 '{{myPath}}/wp-content/uploads/2024/01/fixedratio_20230725123153_f367e78a-150x200.jpeg' -o '{{myPath}}/wp-content/webp-express/webp-images/doc-root/wp-content/uploads/2024/01/fixedratio_20230725123153_f367e78a-150x200.jpeg.webp.lossy.webp' 2>&1

Output:
nice: '{{myPath}}/wp-content/plugins/webp-express/vendor/rosell-dk/webp-convert/src/Convert/Converters/Binaries/cwebp-103-linux-x86-64-static': Permission denied

Executing cwebp binary took: 4 ms

Exec failed (return code: 126)
Note: You can prevent trying this precompiled binary, by setting the "skip-these-precompiled-binaries" option to "cwebp-103-linux-x86-64-static"
Checking checksum for supplied binary: {{myPath}}/wp-content/plugins/webp-express/vendor/rosell-dk/webp-convert/src/Convert/Converters/Binaries/cwebp-061-linux-x86-64
Checksum test took: 29 ms
Creating command line options for version: 0.6.1
The near-lossless option ignored for lossy
Trying to convert by executing the following command:
nice {{myPath}}/wp-content/plugins/webp-express/vendor/rosell-dk/webp-convert/src/Convert/Converters/Binaries/cwebp-061-linux-x86-64 -metadata none -q 80 -alpha_q '80' -sharp_yuv -m 6 '{{myPath}}/wp-content/uploads/2024/01/fixedratio_20230725123153_f367e78a-150x200.jpeg' -o '{{myPath}}/wp-content/webp-express/webp-images/doc-root/wp-content/uploads/2024/01/fixedratio_20230725123153_f367e78a-150x200.jpeg.webp.lossy.webp' 2>&1

Output:
nice: '{{myPath}}/wp-content/plugins/webp-express/vendor/rosell-dk/webp-convert/src/Convert/Converters/Binaries/cwebp-061-linux-x86-64': Permission denied

Executing cwebp binary took: 4 ms

Exec failed (return code: 126)
Note: You can prevent trying this precompiled binary, by setting the "skip-these-precompiled-binaries" option to "cwebp-061-linux-x86-64"

Error: Failed converting. Check the conversion log for details.

I’m confused. On one hand I see “Permission denied” errors, on the other hand I see “missing dependencies” errors.

What do I need to do next to get it to work?