Support » Plugin: LMS by LifterLMS - Online Course, Membership & Learning Management System Plugin for WordPress » Get a blank page when I try to edit a page or course

Viewing 6 replies - 1 through 6 (of 6 total)
  • Plugin Contributor Rocco Aliberti

    (@d4z_c0nf)

    Hi @michaelweiner
    thanks for reporting this.

    I’m actually unable to reproduce it on my local install, so I guess it might have to do with your website “configuration”…

    Could you please share your system report?

    Also, have you already tried to disable all your plugins, and see if the issue still occurs?

    Thanks!

    Thread Starter michaelweiner

    (@michaelweiner)

    Hi Rocco @d4z_c0nf,
    thank you for looking in to this.
    I only used two other plugins, W3 Total Cache and Wordfence. I tried deactivating W3 total Cache, but that didnt change anything.

    Here is my System Report;

    
    Wordpress
    -------------------------------------------
    
    Home Url: https://weiner-beratung.de
    Site Url: https://weiner-beratung.de
    Login Url: 
    Version: 5.6
    Debug Mode: No
    Debug Log: No
    Debug Display: Yes
    Locale: de_DE
    Multisite: No
    Page For Posts: Blog (#11) [https://weiner-beratung.de/blog/]
    Page On Front: Michael Weiner (#53) [https://weiner-beratung.de/]
    Permalink Structure: /%year%/%monthnum%/%day%/%postname%/
    Show On Front: page
    Wp Cron: Yes
    
    Settings
    -------------------------------------------
    
    Version: 4.13.0
    Db Version: 4.13.0
    Course Catalog: Kurs Katalog (#425) [https://weiner-beratung.de/courses/]
    Membership Catalog: Mitglieder Katalog (#426) [https://weiner-beratung.de/memberships/]
    Student Dashboard: Dashboard (#186) [https://weiner-beratung.de/dashboard/]
    Checkout Page: Kasse (#185) [https://weiner-beratung.de/purchase/]
    Course Catalog Per Page: 9
    Course Catalog Sorting: menu_order,ASC
    Membership Catalog Per Page: 9
    Membership Catalog Sorting: menu_order
    Site Membership: Not Set
    Courses Endpoint: my-courses
    Edit Endpoint: edit-account
    Lost Password Endpoint: lost-password
    Vouchers Endpoint: redeem-voucher
    Autogenerate Username: yes
    Password Strength Meter: yes
    Minimum Password Strength: strong
    Terms Required: no
    Terms Page: Not Set
    Checkout Names: required
    Checkout Address: hidden
    Checkout Phone: hidden
    Checkout Email Confirmation: yes
    Open Registration: no
    Registration Names: required
    Registration Address: optional
    Registration Phone: optional
    Registration Voucher: optional
    Registration Email Confirmation: yes
    Account Names: required
    Account Address: hidden
    Account Phone: optional
    Account Email Confirmation: yes
    Confirmation Endpoint: confirm-payment
    Force Ssl Checkout: yes
    Country: DE
    Currency: EUR
    Currency Position: right_space
    Thousand Separator: .
    Decimal Separator: ,
    Decimals: 2
    Trim Zero Decimals: no
    Recurring Payments: yes
    Email From Address: lms@weiner-beratung.de
    Email From Name: Michael Weiner
    Email Footer Text:
    Email Header Image:
    Cert Bg Width: 800
    Cert Bg Height: 616
    Cert Legacy Compat: no
    
    Constants
    -------------------------------------------
    
    LLMS_REMOVE_ALL_DATA: undefined
    LLMS_REST_DISABLE: undefined
    LLMS_SITE_FEATURE_RECURRING_PAYMENTS: undefined
    LLMS_SITE_IS_CLONE: undefined
    
    Gateways
    -------------------------------------------
    
    Manuell: Enabled
    Manuell Logging: no
    Manuell Order: 1
    
    Server
    -------------------------------------------
    
    Mysql Version: 5.6.42
    Php Curl: Yes
    Php Default Timezone: UTC
    Php Fsockopen: Yes
    Php Max Input Vars: 4000
    Php Max Upload Size: 64 MB
    Php Memory Limit: 256M
    Php Post Max Size: 76M
    Php Soap: Yes
    Php Suhosin: No
    Php Time Limt: 240
    Php Version: 7.4.13
    Software: Apache/2.4.43 (Unix)
    Wp Memory Limit: 40M
    
    Browser
    -------------------------------------------
    
    HTTP USER AGENT: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:85.0) Gecko/20100101 Firefox/85.0
    
    Theme
    -------------------------------------------
    
    Name: Neve
    Version: 2.10.0
    Themeuri: https://themeisle.com/themes/neve/
    Authoruri: https://themeisle.com
    Template:
    Child Theme: No
    Llms Support: Yes
    
    Plugins
    -------------------------------------------
    
    LifterLMS: 4.13.0
    W3 Total Cache: 2.1.0
    Wordfence Security: 7.4.14
    
    Integrations
    -------------------------------------------
    
    BbPress: No
    BuddyPress: No
    
    Template Overrides
    -------------------------------------------
    
    • This reply was modified 4 months, 2 weeks ago by Yui.
    • This reply was modified 4 months, 2 weeks ago by Yui. Reason: please use CODE button for proper formatting
    Plugin Contributor Rocco Aliberti

    (@d4z_c0nf)

    @michaelweiner
    thanks!

    I’m honestly unable to reproduce this issue :/
    Something really weird is happening there. This is where the js variable (that the error you provided refers as missing) is set in the plugin codebase:
    https://github.com/gocodebox/lifterlms-blocks/blob/1.12.0/includes/class-llms-blocks.php#L91

    I cannot see why it shouldn’t work on your site too.

    Maybe you can enable the debug logging to see if there’s any PHP error/warning that could give some hints on what’s going on:
    https://lifterlms.com/docs/how-to-debug-a-white-screen/#log
    ?

    Plugin Author Thomas Patrick Levy

    (@thomasplevy)

    @michaelweiner do you have any concatenation or minification going on with your W3 Total Cache settings? Can you try disabling it for a bit and seeing if that could alleviate the issue?

    Thread Starter michaelweiner

    (@michaelweiner)

    @thomasplevy @d4z_c0nf Thanks for your help. I had minifcation activated in W3 Total Cahe. I tried deactivating W3 Total Cache, but it didnt change anything. But I wonder, if I had minifying activated, and W3 Total Cache minified the CSS and JS on my site, does deactivation W3 Total Cache restore the original non-minified code? Or has the damage already been done when it has once minified the code. Anyway, I gave up on it, and restored my site with an update. Can’t be bother now to eperiment until it works.
    Thanks very much for your help, I really appreciate it!

    Plugin Author Thomas Patrick Levy

    (@thomasplevy)

    @michaelweiner

    I really don’t know exactly how the minification and concatentation actually works but I have seen caching plugins which make changes to files on your site (like .htaccess, for example) which are not automatically removed on plugin deactivation (but will be on plugin deletion, sometimes).

    It could be that… I’m not sure. I’d recommend reaching out to the plugin devs if you’re having issues with that.

    Glad you figured it out though

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