“problem registering your GoogleAI API key”

Thank you for the fast turnaround!

The key now registers, but trying to use it fails with error 500. The UI displays

An error occurred
There may be issues with the server or internet connection, or it’s possible that an incorrect API KEY has been specified.

debug.log traces out with

[05-Apr-2025 05:03:22 UTC] PHP Warning:  Undefined array key "error" in <path to plugins>/aibuddy-openai-chatgpt/src/OpenAi/Api.php on line 229
[05-Apr-2025 05:03:53 UTC] PHP Warning:  Undefined array key "error" in <path to plugins>/aibuddy-openai-chatgpt/src/OpenAi/Api.php on line 229
[05-Apr-2025 05:09:36 UTC] PHP Warning:  Undefined array key "error" in <path to plugins>/aibuddy-openai-chatgpt/src/OpenAi/Api.php on line 229
[05-Apr-2025 05:09:36 UTC] PHP Warning:  Undefined array key "data" in <path to plugins>/aibuddy-openai-chatgpt/src/AiContentGenerator.php on line 81
[05-Apr-2025 05:09:36 UTC] PHP Fatal error:  Uncaught TypeError: array_column(): Argument #1 ($array) must be of type array, null given in <path to plugins>/aibuddy-openai-chatgpt/src/AiContentGenerator.php:81
Stack trace:
#0 <path to plugins>/aibuddy-openai-chatgpt/src/AiContentGenerator.php(81): array_column(NULL, 'url')
#1 <path to plugins>/aibuddy-openai-chatgpt/src/Rest.php(500): AiBuddy\AiContentGenerator->exec(Object(AiBuddy\OpenAi\ImageQuery))
#2 /var/www/html/wp-includes/rest-api/class-wp-rest-server.php(1292): AiBuddy\Rest->generate_images(Object(WP_REST_Request))
#3 /var/www/html/wp-includes/rest-api/class-wp-rest-server.php(1125): WP_REST_Server->respond_to_request(Object(WP_REST_Request), '/ai-buddy/v1/ai...', Array, NULL)
#4 /var/www/html/wp-includes/rest-api/class-wp-rest-server.php(439): WP_REST_Server->dispatch(Object(WP_REST_Request))
#5 /var/www/html/wp-includes/rest-api.php(449): WP_REST_Server->serve_request('/ai-buddy/v1/ai...')
#6 /var/www/html/wp-includes/class-wp-hook.php(324): rest_api_loaded(Object(WP))
#7 /var/www/html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters('', Array)
#8 /var/www/html/wp-includes/plugin.php(565): WP_Hook->do_action(Array)
#9 /var/www/html/wp-includes/class-wp.php(418): do_action_ref_array('parse_request', Array)
#10 /var/www/html/wp-includes/class-wp.php(813): WP->parse_request('')
#11 /var/www/html/wp-includes/functions.php(1336): WP->main('')
#12 /var/www/html/wp-blog-header.php(16): wp()
#13 /var/www/html/index.php(17): require('/var/www/html/w...')
#14 {main}
  thrown in <path to plugins>/aibuddy-openai-chatgpt/src/AiContentGenerator.php on line 81