Warning error plugins/EMPTY

I have a multisite.

I assume the following error may be from one of many plugins I have deleted (using the delete feature of the plugin).

When a new user clicks on the activation link and is directed to the wp-activate.php page the following warnings come up on the header of the page.

Warning:fopen(homeurl/blogs/wp-content/plugin/EMPTY)failed to open stream:No such file or director in homeurl/blogs/wp-include/functions.php on line 4305.

Warning”fread() expects parameter 1 to be resource, Boolean given in /homeurl/blogs/wp-includes/functions.php on line 4308.

Warning:fclose()expects parameter 1 to be resource, Boolean given in /homeurl/blogs/wp-includes/functions.php on line 4311.

Here is the code the above is referencing to:

/**
 * Retrieve metadata from a file.
 *
 * Searches for metadata in the first 8kiB of a file, such as a plugin or theme.
 * Each piece of metadata must be on its own line. Fields can not span multiple
 * lines, the value will get cut at the end of the first line.
 *
 * If the file data is not within that first 8kiB, then the author should correct
 * their plugin file and move the data headers to the top.
 *
 * @link https://codex.ww.wp.xz.cn/File_Header
 *
 * @since 2.9.0
 *
 * @param string $file            Path to the file.
 * @param array  $default_headers List of headers, in the format array('HeaderKey' => 'Header Name').
 * @param string $context         Optional. If specified adds filter hook "extra_{$context}_headers".
 *                                Default empty.
 * @return array Array of file headers in <code>HeaderKey => Header Value</code> format.
 */
function get_file_data( $file, $default_headers, $context = '' ) {
	// We don't need to write to the file, so just open for reading.
	$fp = fopen( $file, 'r' );

	// Pull only the first 8kiB of the file in.
	$file_data = fread( $fp, 8192 );

	// PHP will close file handle, but we are good citizens.
	fclose( $fp );

	// Make sure we catch CR-only line endings.
	$file_data = str_replace( "\r", "\n", $file_data );

specifically:

line 4305 	$fp = fopen( $file, 'r' );
line 4308 	$file_data = fread( $fp, 8192 );
line 4311 	fclose( $fp );