I solved it but you have to add manually in the database, in the tables mdl_capabilities and mdl_role_capabilities. I don't know why during the upgrading the following rows were not added:
on Table mdl_capabilities
729 quizaccess/seb:manage_seb_filterembeddedcontent write 70 quizaccess_seb 0
730 quizaccess/seb:manage_seb_expressionsallowed write 70 quizaccess_seb 0
731 quizaccess/seb:manage_seb_expressionsblocked write 70 quizaccess_seb 0
732 quizaccess/seb:manage_seb_regexallowed write 70 quizaccess_seb 0
733 quizaccess/seb:manage_seb_regexblocked write 70 quizaccess_seb 0
on Table mdl_role_capabilities
2243 1 1 quizaccess/seb:manage_seb_filterembeddedcontent 1 1601076777 2
2244 1 3 quizaccess/seb:manage_seb_filterembeddedcontent 1 1601076777 2
2245 1 1 quizaccess/seb:manage_seb_expressionsallowed 1 1601076777 2
2246 1 3 quizaccess/seb:manage_seb_expressionsallowed 1 1601076777 2
2247 1 1 quizaccess/seb:manage_seb_expressionsblocked 1 1601076777 2
2248 1 3 quizaccess/seb:manage_seb_expressionsblocked 1 1601076777 2
2249 1 1 quizaccess/seb:manage_seb_regexallowed 1 1601076778 2
2250 1 3 quizaccess/seb:manage_seb_regexallowed 1 1601076778 2
2251 1 1 quizaccess/seb:manage_seb_regexblocked 1 1601076778 2
2252 1 3 quizaccess/seb:manage_seb_regexblocked 1 1601076778 2
Hope this help you.