Does not comply with psr-4 autoloading standard

[hipwebdesign]

Does not comply with psr-4 autoloading standard

Composer returns the following error: Deprecation Notice: Class RESO\RESO located in ./vendor/reso/reso-php/lib/Reso.php does not comply with psr-4 autoloading standard. It will not autoload anymore in Composer v2.0. in phar:///usr/local/bin/composer/src/Composer/Autoload/ClassMapGenerator.php:201

Warning indicates that package will not autoload in Composer v2.0, but I'm running v1.10.6 and I still can't get it to autoload.

Steps to Reproduce

1. Install package composer require reso/reso-php
2. Run composer dump-autoload --optimize
3. Call require_once('/path/to/vendor/autoload.php');
4. Returns Fatal error: Uncaught Error: Class 'RESO\RESO' not found

Expected behavior: Autoload package and make Classes accessible.

Actual behavior: Autoload runs without package and Classes are inaccessible.

Versions

RESO-WebAPI-Client-PHP v1.0
Composer V.1.10.6
PHP v7.3.11

[venom1979]

Same issue here. Same Composer version: 1.10.6.

[danvbe]

Using composer 2.0.12 I got:
Class RESO\RESO located in ./vendor/reso/reso-php/lib/Reso.php does not comply with psr-4 autoloading standard. Skipping.

I have managed to load the classes by adding a separate entry in composer.json, to load RESO classes with classmap:

"autoload": {
        "psr-4": {
            ..... [my original psr-4 config] ....
        },
        "classmap": ["vendor/reso/reso-php/lib/"]
    },