on</span> <span class="hljs-params">(Blueprint $table)</span> </span>{
            $table-&gt;id();
            $table-&gt;unsignedBigInteger(<span class="hljs-string">'erb_id'</span>)-&gt;default(<span class="hljs-number">0</span>)-&gt;nullable();
            $table-&gt;string(<span class="hljs-string">'num_serie'</span>)-&gt;unique()-&gt;nullable();
            $table-&gt;string(<span class="hljs-string">'passw'</span>)-&gt;nullable();
            $table-&gt;string(<span class="hljs-string">'vol_1'</span>