REST API error

I got this error message from my site health check, and I believe the error is coming from yoast seo plugin. Here is the message below:
The REST API call gave the following unexpected result: (403) {“description”:””,”hierarchical”:false,”name”:”Posts”,”slug”:”post”,”taxonomies”:[“category”,”post_tag”],”rest_base”:”posts”,”yoast_head”:”<!– This site is optimized with the Yoast SEO plugin v14.8.1 – https:\/\/yoast.com\/wordpress\/plugins\/seo\/ –>\n<title>All University News – Latest News from JAMB, WAEC, UTME, NECO, NABTEB, Scholarship<\/title>\n<meta name=\”description\” content=\”Latest News from JAMB, Post-UTME, WAEC, NECO, NABTEB, Screening, Scholarships\” \/>\n<meta name=\”robots\” content=\”index, follow\” \/>\n<meta name=\”googlebot\” content=\”index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\” \/>\n<meta name=\”bingbot\” content=\”index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\” \/>\n<link rel=\”canonical\” href=\”https:\/\/alluniversitynews.com\/\” \/>\n<meta property=\”og:locale\” content=\”en_US\” \/>\n<meta property=\”og:type\” content=\”website\” \/>\n<meta property=\”og:title\” content=\”All University News – Latest News from JAMB, WAEC, UTME, NECO, NABTEB, Scholarship\” \/>\n<meta property=\”og:description\” content=\”Latest News from JAMB, Post-UTME, WAEC, NECO, NABTEB, Screening, Scholarships\” \/>\n<meta property=\”og:url\” content=\”https:\/\/alluniversitynews.com\/\” \/>\n<meta property=\”og:site_name\” content=\”All University News\” \/>\n<meta name=\”twitter:card\” content=\”summary_large_image\” \/>\n<meta name=\”twitter:site\” content=\”@AUN_OFFICIAL\” \/>\n<script type=\”application\/ld+json\” class=\”yoast-schema-graph\”>{\”@context\”:\”https:\/\/schema.org\”,\”@graph\”:[{\”@type\”:\”Organization\”,\”@id\”:\”https:\/\/alluniversitynews.com\/#organization\”,\”name\”:\”All University News\”,\”url\”:\”https:\/\/alluniversitynews.com\/\”,\”sameAs\”:[\”https:\/\/web.facebook.com\/aun360\/\”,\”https:\/\/twitter.com\/AUN_OFFICIAL\”],\”logo\”:{\”@type\”:\”ImageObject\”,\”@id\”:\”https:\/\/alluniversitynews.com\/#logo\”,\”inLanguage\”:\”en-US\”,\”url\”:\”\”,\”caption\”:\”All University News\”},\”image\”:{\”@id\”:\”https:\/\/alluniversitynews.com\/#logo\”}},{\”@type\”:\”WebSite\”,\”@id\”:\”https:\/\/alluniversitynews.com\/#website\”,\”url\”:\”https:\/\/alluniversitynews.com\/\”,\”name\”:\”All University News\”,\”description\”:\”Latest News from JAMB, WAEC, UTME, NECO, NABTEB, Scholarship\”,\”publisher\”:{\”@id\”:\”https:\/\/alluniversitynews.com\/#organization\”},\”potentialAction\”:[{\”@type\”:\”SearchAction\”,\”target\”:\”https:\/\/alluniversitynews.com\/?s={search_term_string}\”,\”query-input\”:\”required name=search_term_string\”}],\”inLanguage\”:\”en-US\”},{\”@type\”:\”CollectionPage\”,\”@id\”:\”https:\/\/alluniversitynews.com\/#webpage\”,\”url\”:\”https:\/\/alluniversitynews.com\/\”,\”name\”:\”All University News – Latest News from JAMB, WAEC, UTME, NECO, NABTEB, Scholarship\”,\”isPartOf\”:{\”@id\”:\”https:\/\/alluniversitynews.com\/#website\”},\”description\”:\”Latest News from JAMB, Post-UTME, WAEC, NECO, NABTEB, Screening, Scholarships\”,\”inLanguage\”:\”en-US\”,\”potentialAction\”:[{\”@type\”:\”ReadAction\”,\”target\”:[\”https:\/\/alluniversitynews.com\/\”]}]}]}<\/script>\n<meta name=\”msvalidate.01\” content=\”CA6E\” \/>\n<meta name=\”google-site-verification\” content=\”b9u8_NIBX6iLsw2VeaFzdEt3ghLb2vGEhlwDsz6A\” \/>\n<meta name=\”yandex-verification\” content=\”a903b70cf1345e12\” \/>\n<!– \/ Yoast SEO plugin. –>”,”_links”:{“collection”:[{“href”:”https:\/\/alluniversitynews.com\/wp-json\/wp\/v2\/types”}],”wp:items”:[{“href”:”https:\/\/alluniversitynews.com\/wp-json\/wp\/v2\/posts”}],”curies”:[{“name”:”wp”,”href”:”https:\/\/api.w.org\/{rel}”,”templated”:true}]}}.