php - Blank Screen when adding a moodle (3.1.7) activity to a course -


i have installed lamp php 5.4.16, maria db , moodle 3.1.7 on red hat enterprise linux 7.

i installed 

sudo yum install moodle

when pressing button "add activity or ressource", popup opens select activity/ressource, when click "add"-button blank screen (chrome says http 500).

when turn debugging on this:

...moodle/course/modedit.php?add=folder&type=&course=2§ion=0&return=0&sr=0 fatal error: call undefined method tool_lp_course_competencies_form_element::tool_lp_course_competencies_form_element() in /usr/share/pear/html/quickform/element.php on line 375

i did not change source code. can origin of this?

with best regards, bjoern

when turn on debugging following error: ...moodle/course/modedit.php?add=folder&type=&course=2§ion=0&return=0&sr=0 fatal error: call undefined method tool_lp_course_competencies_form_element::tool_lp_course_competencies_form_element() in /usr/share/pear/html/quickform/element.php on line 375

my (weak) solution: when turn off competencies under administration -> site administration -> competencies -> competencies settings -> enable competencies  works.  if has better solution please tell me.


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