PHP Warning: Cannot modify header information

How to fix this sir?

PHP Warning: Cannot modify header information - headers already sent by (output started at /home/null/public_html/wp-cron.php:30) in /home/……/public_html/wp-content/plugins/wp-cloudflare-page-cache/src/Utils/Helpers.php on line 21

` wp-core

version: 6.8
site_language: en_US
user_language: en_US
timezone: Asia/Jakarta
permalink: /%postname%/
https_status: true
multisite: false
user_registration: 0
blog_public: 1
default_comment_status: open
environment_type: production
user_count: 1
dotorg_communication: true wp-paths-sizes

wordpress_path: /home/null/public_html
wordpress_size: 82.87 MB (86894103 bytes)
uploads_path: /home/null/public_html/wp-content/uploads
uploads_size: 828.85 KB (848739 bytes)
themes_path: /home/null/public_html/wp-content/themes
themes_size: 10.71 MB (11231458 bytes)
plugins_path: /home/null/public_html/wp-content/plugins
plugins_size: 12.98 MB (13610702 bytes)
fonts_path: /home/null/public_html/wp-content/uploads/fonts
fonts_size: directory not found
database_size: 2.73 MB (2867200 bytes)
total_size: 110.10 MB (115452202 bytes) wp-dropins (3)

advanced-cache.php: true
maintenance.php: true
object-cache.php: true wp-active-theme

name: LeapPress (A GeneratePress Child from Ezoic) (generatepress-ezoic-leap)
version: 3.0.3.1619562464
author: Ezoic
author_website: https://www.ezoic.com
parent_theme: GeneratePress (generatepress)
theme_features: core-block-patterns, widgets-block-editor, automatic-feed-links, post-thumbnails, post-formats, woocommerce, title-tag, html5, customize-selective-refresh-widgets, align-wide, responsive-embeds, editor-color-palette, custom-logo, menus, editor-styles, editor-style, widgets
theme_path: /home/null/public_html/wp-content/themes/generatepress-ezoic-leap
auto_update: Disabled wp-parent-theme

name: GeneratePress (generatepress)
version: 3.5.1
author: Tom Usborne
author_website: https://tomusborne.com
theme_path: /home/null/public_html/wp-content/themes/generatepress
auto_update: Disabled wp-themes-inactive (1)

Twenty Twenty-Five: version: 1.2, author: the WordPress team, Auto-updates disabled wp-mu-plugins (1)

Index WP MySQL For Speed Upgrade Filter for mu-plugins.: author: (undefined), version: 1.5.3 wp-plugins-active (7)

Advanced Database Cleaner PRO: version: 3.2.11, author: Younes JFR., Auto-updates disabled
GP Premium: version: 2.5.2, author: Tom Usborne, Auto-updates disabled
Index WP MySQL For Speed: version: 1.5.3, author: Oliver Jones, Rick James, Auto-updates disabled
Slim SEO: version: 4.5.1, author: Slim SEO, Auto-updates disabled
SQLite Object Cache: version: 1.5.5, author: Oliver Jones, Auto-updates disabled
Super Page Cache: version: 5.0.11, author: Themeisle, Auto-updates disabled
WPCode Pro: version: 2.2.7, author: WPCode, Auto-updates disabled wp-plugins-inactive (1)

Headers Security Advanced & HSTS WP: version: 5.0.42, author: 🐙 Andrea Ferro, Auto-updates disabled wp-media

image_editor: WP_Image_Editor_Imagick
imagick_module_version: 1809
imagemagick_version: ImageMagick 7.1.1-43 Q16-HDRI x86_64 22550 https://imagemagick.org
imagick_version: 3.7.0
file_uploads: 1
post_max_size: 2048M
upload_max_filesize: 2048M
max_effective_size: 2 GB
max_file_uploads: 20
imagick_limits:
imagick::RESOURCETYPE_AREA: 183 GB
imagick::RESOURCETYPE_DISK: 9.2233720368548E+18
imagick::RESOURCETYPE_FILE: 196608
imagick::RESOURCETYPE_MAP: 92 GB
imagick::RESOURCETYPE_MEMORY: 46 GB
imagick::RESOURCETYPE_THREAD: 1
imagick::RESOURCETYPE_TIME: 0
imagemagick_file_formats: 3FR, 3G2, 3GP, A, AAI, AI, APNG, ART, ARW, ASHLAR, AVCI, AVI, AVIF, AVS, B, BAYER, BAYERA, BGR, BGRA, BGRO, BIE, BMP, BMP2, BMP3, BRF, C, CAL, CALS, CANVAS, CAPTION, CIN, CIP, CLIP, CMYK, CMYKA, CR2, CR3, CRW, CUBE, CUR, CUT, DATA, DCM, DCR, DCRAW, DCX, DDS, DFONT, DNG, DOT, DPX, DXT1, DXT5, EPDF, EPI, EPS, EPS2, EPS3, EPSF, EPSI, EPT, EPT2, EPT3, ERF, EXR, FARBFELD, FAX, FF, FFF, FILE, FITS, FL32, FLV, FRACTAL, FTP, FTS, FTXT, G, G3, G4, GIF, GIF87, GRADIENT, GRAY, GRAYA, GROUP4, GV, HALD, HDR, HEIC, HEIF, HISTOGRAM, HRZ, HTM, HTML, HTTP, HTTPS, ICB, ICO, ICON, IIQ, INFO, INLINE, IPL, ISOBRL, ISOBRL6, J2C, J2K, JBG, JBIG, JNG, JNX, JP2, JPC, JPE, JPEG, JPG, JPM, JPS, JPT, JSON, K, K25, KDC, LABEL, M, M2V, M4V, MAC, MAP, MASK, MAT, MATTE, MDC, MEF, MIFF, MKV, MNG, MONO, MOS, MOV, MP4, MPC, MPEG, MPG, MPO, MRW, MSL, MSVG, MTV, MVG, NEF, NRW, NULL, O, ORA, ORF, OTB, OTF, PAL, PALM, PAM, PANGO, PATTERN, PBM, PCD, PCDS, PCL, PCT, PCX, PDB, PDF, PDFA, PEF, PES, PFA, PFB, PFM, PGM, PGX, PHM, PICON, PICT, PIX, PJPEG, PLASMA, PNG, PNG00, PNG24, PNG32, PNG48, PNG64, PNG8, PNM, POCKETMOD, PPM, PS, PS2, PS3, PSB, PSD, PTIF, PWP, QOI, R, RADIAL-GRADIENT, RAF, RAS, RAW, RGB, RGB565, RGBA, RGBO, RGF, RLA, RLE, RMF, RSVG, RW2, RWL, SCR, SCREENSHOT, SCT, SFW, SGI, SHTML, SIX, SIXEL, SPARSE-COLOR, SR2, SRF, SRW, STEGANO, STI, STRIMG, SUN, SVG, SVGZ, TEXT, TGA, THUMBNAIL, TIFF, TIFF64, TILE, TIM, TM2, TTC, TTF, TXT, UBRL, UBRL6, UIL, UYVY, VDA, VICAR, VID, VIFF, VIPS, VST, WBMP, WEBM, WEBP, WMF, WMV, WMZ, WPG, X, X3F, XBM, XC, XCF, XPM, XPS, XV, XWD, Y, YAML, YCBCR, YCBCRA, YUV
gd_version: 2.3.3
gd_formats: GIF, JPEG, PNG, WebP, BMP, AVIF, XPM
ghostscript_version: 9.27 wp-server

server_architecture: Linux 4.18.0-553.30.1.lve.el8.x86_64 x86_64
httpd_software: LiteSpeed
php_version: 8.3.16 64bit
php_sapi: litespeed
max_input_variables: 3000
time_limit: 180
memory_limit: 2048M
max_input_time: 60
upload_max_filesize: 2048M
php_post_max_size: 2048M
curl_version: 8.11.0 OpenSSL/1.1.1w
suhosin: false
imagick_availability: true
pretty_permalinks: true
htaccess_extra_rules: true
static_robotstxt_file: false
current: 2025-04-17T13:09:56+00:00
utc-time: Thursday, 17-Apr-25 13:09:56 UTC
server-time: 2025-04-17T20:09:54+07:00 wp-database

extension: mysqli
server_version: 10.6.21-MariaDB
client_version: mysqlnd 8.3.16
max_allowed_packet: 268435456
max_connections: 1000 wp-constants

WP_HOME: undefined
WP_SITEURL: undefined
WP_CONTENT_DIR: /home/null/public_html/wp-content
WP_PLUGIN_DIR: /home/null/public_html/wp-content/plugins
WP_MEMORY_LIMIT: 512M
WP_MAX_MEMORY_LIMIT: 2048M
WP_DEBUG: false
WP_DEBUG_DISPLAY: false
WP_DEBUG_LOG: false
SCRIPT_DEBUG: false
WP_CACHE: true
CONCATENATE_SCRIPTS: undefined
COMPRESS_SCRIPTS: undefined
COMPRESS_CSS: undefined
WP_ENVIRONMENT_TYPE: undefined
WP_DEVELOPMENT_MODE: undefined
DB_CHARSET: utf8mb4
DB_COLLATE: undefined wp-filesystem

wordpress: writable
wp-content: writable
uploads: writable
plugins: writable
themes: writable
fonts: does not exist
mu-plugins: writable sqlite-object-cache

configuration: use_apcu:on; target_size:32; capture:on; samplerate:100; retainmeasurements:24; previouscapture:0
versions: Versions: WordPress: 6.8 SQLite: 3.45.2 php: 8.3.16 Server: LiteSpeed Plugin: 1.5.5 APCu: 5.1.23 igbinary: 3.2.15.
settings: apc.coredump_unmap:0; apc.enable_cli:0; apc.enabled:1; apc.entries_hint:4096; apc.gc_ttl:3600; apc.mmap_file_mask:; apc.preload_path:; apc.serializer:php; apc.shm_segments:1; apc.shm_size:32M; apc.slam_defense:0; apc.smart:0; apc.ttl:0; apc.use_request_time:0; sqlite3.defensive:1; sqlite3.extension_dir:; session.save_handler:files; session.auto_start:-missing-; session.lifetime:-missing-; session.gc_maxlifetime:1440
apcu_utilization: salt:null; total:438904(166); mine:438904(166)
apcu_cache_info: num_slots:4099; ttl:0; num_hits:1040; num_misses:283; num_inserts:175; num_entries:166; expunges:0; start_time:1744895080; mem_size:438904; memory_type:mmap; num_seg:1; seg_size:33554312; avail_mem:33077032
sqlite_sizes: page_size:4096; free_pages:665; total_pages:1439; stats_items:1598; stats_size:1734643; mmap_size:0