getting invalid get_string() in moodle

Invalid get_string() identifier: 'joomdle:config' or component 'enrol_joomdle'. Perhaps you are missing $string = ''; in /home11/ascensio/public_html/hub/enrol/joomdle/lang/en/enrol_joomdle.php?
line 349 of /lib/classes/string_manager_standard.php: call to debugging()
line 6684 of /lib/moodlelib.php: call to core_string_manager_standard->get_string()
line 3034 of /lib/accesslib.php: call to get_string()
line 2879 of /lib/accesslib.php: call to get_capability_string()
line 118 of /admin/roles/classes/capability_table_base.php: call to get_capability_docs_link()
line 149 of /admin/roles/check.php: call to core_role_capability_table_base->display()
Invalid get_string() identifier: 'joomdle:manage' or component 'enrol_joomdle'. Perhaps you are missing $string = ''; in /home11/ascensio/public_html/hub/enrol/joomdle/lang/en/enrol_joomdle.php?
line 349 of /lib/classes/string_manager_standard.php: call to debugging()
line 6684 of /lib/moodlelib.php: call to core_string_manager_standard->get_string()
line 3034 of /lib/accesslib.php: call to get_string()
line 2879 of /lib/accesslib.php: call to get_capability_string()
line 118 of /admin/roles/classes/capability_table_base.php: call to get_capability_docs_link()
line 149 of /admin/roles/check.php: call to core_role_capability_table_base->display()
Invalid get_string() identifier: 'joomdle:unenrol' or component 'enrol_joomdle'. Perhaps you are missing $string = ''; in /home11/ascensio/public_html/hub/enrol/joomdle/lang/en/enrol_joomdle.php?
line 349 of /lib/classes/string_manager_standard.php: call to debugging()
line 6684 of /lib/moodlelib.php: call to core_string_manager_standard->get_string()
line 3034 of /lib/accesslib.php: call to get_string()
line 2879 of /lib/accesslib.php: call to get_capability_string()
line 118 of /admin/roles/classes/capability_table_base.php: call to get_capability_docs_link()
line 149 of /admin/roles/check.php: call to core_role_capability_table_base->display()
Invalid get_string() identifier: 'stripepayment:config' or component 'enrol_stripepayment'. Perhaps you are missing $string = ''; in /home11/ascensio/public_html/hub/enrol/stripepayment/lang/en/enrol_stripepayment.php?
line 349 of /lib/classes/string_manager_standard.php: call to debugging()
line 6684 of /lib/moodlelib.php: call to core_string_manager_standard->get_string()
line 3034 of /lib/accesslib.php: call to get_string()
line 2879 of /lib/accesslib.php: call to get_capability_string()
line 118 of /admin/roles/classes/capability_table_base.php: call to get_capability_docs_link()
line 149 of /admin/roles/check.php: call to core_role_capability_table_base->display()
Invalid get_string() identifier: 'stripepayment:manage' or component 'enrol_stripepayment'. Perhaps you are missing $string = ''; in /home11/ascensio/public_html/hub/enrol/stripepayment/lang/en/enrol_stripepayment.php?
line 349 of /lib/classes/string_manager_standard.php: call to debugging()
line 6684 of /lib/moodlelib.php: call to core_string_manager_standard->get_string()
line 3034 of /lib/accesslib.php: call to get_string()
line 2879 of /lib/accesslib.php: call to get_capability_string()
line 118 of /admin/roles/classes/capability_table_base.php: call to get_capability_docs_link()
line 149 of /admin/roles/check.php: call to core_role_capability_table_base->display()
Invalid get_string() identifier: 'stripepayment:unenrol' or component 'enrol_stripepayment'. Perhaps you are missing $string = ''; in /home11/ascensio/public_html/hub/enrol/stripepayment/lang/en/enrol_stripepayment.php?
line 349 of /lib/classes/string_manager_standard.php: call to debugging()
line 6684 of /lib/moodlelib.php: call to core_string_manager_standard->get_string()
line 3034 of /lib/accesslib.php: call to get_string()
line 2879 of /lib/accesslib.php: call to get_capability_string()
line 118 of /admin/roles/classes/capability_table_base.php: call to get_capability_docs_link()
line 149 of /admin/roles/check.php: call to core_role_capability_table_base->display()
Invalid get_string() identifier: 'stripepayment:unenrolself' or component 'enrol_stripepayment'. Perhaps you are missing $string = ''; in /home11/ascensio/public_html/hub/enrol/stripepayment/lang/en/enrol_stripepayment.php?
line 349 of /lib/classes/string_manager_standard.php: call to debugging()
line 6684 of /lib/moodlelib.php: call to core_string_manager_standard->get_string()
line 3034 of /lib/accesslib.php: call to get_string()
line 2879 of /lib/accesslib.php: call to get_capability_string()
line 118 of /admin/roles/classes/capability_table_base.php: call to get_capability_docs_link()
line 149 of /admin/roles/check.php: call to core_role_capability_table_base->display()

Can you tell us when do you get this message?

I see this message too when I go to "Editing Role Web Service" the following lines appear before the role assignment options.

Thanks for the info.

You can remove the errors by adding this to moodle/enrol/joomdle/lang/en/enrol_joomdle.php:
You may need to purge moodle cache before it shows correctly.

Yes, that worked after a purge of the Moodle cache.

For those looking, the purge all caches feature is at: Site Administration > Development > Purge all caches